diff --git a/public/style.css b/public/style.css
index 1a4e3d2..e0c8117 100644
--- a/public/style.css
+++ b/public/style.css
@@ -132,3 +132,19 @@ ol li { margin: 4px 0; }
   font-size: 13px;
   color: #666;
 }
+
+.decl-input {
+  max-width: 180px;
+  font-size: 13px;
+  padding: 4px 6px;
+}
+.decl-input:disabled {
+  background: #f0f0f0;
+  color: #999;
+  cursor: not-allowed;
+}
+.decl-cb {
+  width: 18px;
+  height: 18px;
+  cursor: pointer;
+}
diff --git a/src/db.js b/src/db.js
index d810462..e0676ed 100644
--- a/src/db.js
+++ b/src/db.js
@@ -109,6 +109,9 @@ async function initDb() {
   // Миграция: перенос Русского/Математики в обязательные слоты 01/02, если они пусты
   migrateMandatorySubjects();
 
+  // Миграция: таблица склонений ФИО
+  migrateDeclensions();
+
   console.log('БД инициализирована');
   return db;
 }
@@ -164,6 +167,27 @@ function migrateMandatorySubjects() {
   }
 }
 
+function migrateDeclensions() {
+  if (!db) return;
+  db.run(`
+    CREATE TABLE IF NOT EXISTS name_declensions (
+      id INTEGER PRIMARY KEY AUTOINCREMENT,
+      last_name TEXT NOT NULL,
+      first_name TEXT NOT NULL,
+      patronymic TEXT DEFAULT '',
+      last_name_declined TEXT DEFAULT '',
+      first_name_declined TEXT DEFAULT '',
+      patronymic_declined TEXT DEFAULT '',
+      no_decline_last INTEGER DEFAULT 0,
+      no_decline_first INTEGER DEFAULT 0,
+      no_decline_patr INTEGER DEFAULT 0,
+      updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+      UNIQUE(last_name, first_name, patronymic)
+    )
+  `);
+  saveDb();
+}
+
 function getDb() {
   if (!db) throw new Error('БД не инициализирована.');
   return db;
diff --git a/src/routes/api.js b/src/routes/api.js
index 6b0d0ac..7be0c78 100644
--- a/src/routes/api.js
+++ b/src/routes/api.js
@@ -246,6 +246,82 @@ router.get('/classes', (req, res) => {
   res.json(rows.map(r => r.class));
 });
 
+router.get('/declensions', (req, res) => {
+  const { last_name, first_name, patronymic } = req.query;
+  const whereClauses = [];
+  const params = [];
+
+  if (last_name) {
+    whereClauses.push('s.last_name LIKE ?');
+    params.push(`%${last_name}%`);
+  }
+  if (first_name) {
+    whereClauses.push('s.first_name LIKE ?');
+    params.push(`%${first_name}%`);
+  }
+  if (patronymic) {
+    whereClauses.push('s.patronymic LIKE ?');
+    params.push(`%${patronymic}%`);
+  }
+
+  const wherePart = whereClauses.length ? 'WHERE ' + whereClauses.join(' AND ') : '';
+
+  const rows = dbAll(`
+    SELECT DISTINCT s.last_name, s.first_name, s.patronymic,
+      nd.id as declension_id,
+      nd.last_name_declined,
+      nd.first_name_declined,
+      nd.patronymic_declined,
+      nd.no_decline_last,
+      nd.no_decline_first,
+      nd.no_decline_patr,
+      nd.updated_at
+    FROM students s
+    LEFT JOIN name_declensions nd
+      ON nd.last_name = s.last_name
+      AND nd.first_name = s.first_name
+      AND nd.patronymic = s.patronymic
+    ${wherePart}
+    ORDER BY s.last_name, s.first_name, s.patronymic
+  `, params);
+
+  res.json(rows);
+});
+
+router.put('/declensions', (req, res) => {
+  const { last_name, first_name, patronymic, last_name_declined, first_name_declined, patronymic_declined, no_decline_last, no_decline_first, no_decline_patr } = req.body;
+
+  if (!last_name || !first_name) {
+    return res.status(400).json({ error: 'Фамилия и имя обязательны' });
+  }
+
+  dbRun(`
+    INSERT INTO name_declensions (last_name, first_name, patronymic, last_name_declined, first_name_declined, patronymic_declined, no_decline_last, no_decline_first, no_decline_patr, updated_at)
+    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, datetime('now'))
+    ON CONFLICT(last_name, first_name, patronymic) DO UPDATE SET
+      last_name_declined = excluded.last_name_declined,
+      first_name_declined = excluded.first_name_declined,
+      patronymic_declined = excluded.patronymic_declined,
+      no_decline_last = excluded.no_decline_last,
+      no_decline_first = excluded.no_decline_first,
+      no_decline_patr = excluded.no_decline_patr,
+      updated_at = excluded.updated_at
+  `, [
+    last_name,
+    first_name,
+    patronymic || '',
+    last_name_declined || '',
+    first_name_declined || '',
+    patronymic_declined || '',
+    no_decline_last ? 1 : 0,
+    no_decline_first ? 1 : 0,
+    no_decline_patr ? 1 : 0
+  ]);
+
+  saveDb();
+  res.json({ ok: true });
+});
+
 router.delete('/data', (req, res) => {
   dbRun('DELETE FROM exam_results');
   dbRun('DELETE FROM students');
diff --git a/src/routes/pages.js b/src/routes/pages.js
index fc4dbe7..77c51e1 100644
--- a/src/routes/pages.js
+++ b/src/routes/pages.js
@@ -1,5 +1,5 @@
 const express = require('express');
-const { dbGet, dbAll } = require('../db');
+const { dbGet, dbAll, dbRun } = require('../db');
 const router = express.Router();
 
 const requireAuth = (req, res, next) => {
@@ -119,7 +119,7 @@ router.get('/certificate/:id', requireAuth, (req, res) => {
   }
 
   const gender = detectGender(student.patronymic);
-  const fioDative = formatNameDative(student, gender);
+  const fioDative = formatNameDativeWithOverrides(student, gender);
   const verbEnding = gender === 'm' ? 'обучался' : 'обучалась';
   const verbEnding2 = gender === 'm' ? 'получил' : 'получила';
 
@@ -203,6 +203,53 @@ function declineMalePatr(name) {
   return name + 'у';
 }
 
+function getDeclensionOverrides(last_name, first_name, patronymic) {
+  return dbGet(
+    'SELECT * FROM name_declensions WHERE last_name = ? AND first_name = ? AND patronymic = ?',
+    [last_name || '', first_name || '', patronymic || '']
+  );
+}
+
+function formatNameDativeWithOverrides(student, gender) {
+  const l = student.last_name || '';
+  const f = student.first_name || '';
+  const p = student.patronymic || '';
+
+  let declinedL, declinedF, declinedP;
+  if (gender === 'f') {
+    declinedL = declineFemaleLast(l);
+    declinedF = declineFemaleFirst(f);
+    declinedP = declineFemalePatr(p);
+  } else {
+    declinedL = declineMaleLast(l);
+    declinedF = declineMaleFirst(f);
+    declinedP = declineMalePatr(p);
+  }
+
+  const override = getDeclensionOverrides(l, f, p);
+  if (override) {
+    if (override.no_decline_last) {
+      declinedL = l;
+    } else if (override.last_name_declined) {
+      declinedL = override.last_name_declined;
+    }
+
+    if (override.no_decline_first) {
+      declinedF = f;
+    } else if (override.first_name_declined) {
+      declinedF = override.first_name_declined;
+    }
+
+    if (override.no_decline_patr) {
+      declinedP = p;
+    } else if (override.patronymic_declined) {
+      declinedP = override.patronymic_declined;
+    }
+  }
+
+  return `${declinedL} ${declinedF} ${declinedP}`;
+}
+
 router.get('/batch-print', requireAuth, (req, res) => {
   const { class: cls, parallel, type } = req.query;
 
@@ -245,7 +292,7 @@ router.get('/batch-print', requireAuth, (req, res) => {
     const finalType = (type === 'gia' || type === 'gve') ? type : autoType;
 
     const gender = detectGender(st.patronymic);
-    const fioDative = formatNameDative(st, gender);
+    const fioDative = formatNameDativeWithOverrides(st, gender);
 
     let allSubjects;
     if (finalType === 'gia') {
@@ -289,4 +336,8 @@ router.get('/history', requireAuth, (req, res) => {
   res.render('history', { rows, user: req.session.user });
 });
 
+router.get('/declension', requireAuth, (req, res) => {
+  res.render('declension', { user: req.session.user });
+});
+
 module.exports = router;
diff --git a/views/declension.ejs b/views/declension.ejs
new file mode 100644
index 0000000..23b5d70
--- /dev/null
+++ b/views/declension.ejs
@@ -0,0 +1,246 @@
+<!DOCTYPE html>
+<html lang="ru">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Склонение ФИО — Справки ГИА/ГВЭ</title>
+  <link rel="stylesheet" href="/style.css">
+</head>
+<body>
+  <div class="container">
+    <h1>Настройки склонения ФИО</h1>
+
+    <nav class="nav">
+      <a href="/" class="btn">&larr; К списку</a>
+      <a href="/import" class="btn btn-green">Импорт XLS</a>
+      <a href="/history" class="btn" style="background:#5a3e85">История</a>
+      <span class="user-bar"><%= user ? user.name : '' %></span>
+      <button id="logout-btn" class="btn btn-logout">Выйти</button>
+    </nav>
+
+    <div class="card">
+      <p style="font-size:13px;color:#666;margin-bottom:10px">
+        Настройте склонение фамилии, имени и отчества для справок.
+        Если отмечено «Не склоняется» — ФИО будет использоваться в именительном падеже.
+        Если введено своё склонение — оно будет использовано вместо автоматического.
+      </p>
+
+      <div class="form-row">
+        <label>Фамилия:</label>
+        <input type="text" id="filter-last" class="input input-sm" placeholder="Фильтр по фамилии" oninput="loadDeclensions()">
+      </div>
+      <div class="form-row">
+        <label>Имя:</label>
+        <input type="text" id="filter-first" class="input input-sm" placeholder="Фильтр по имени" oninput="loadDeclensions()">
+      </div>
+      <div class="form-row">
+        <label>Отчество:</label>
+        <input type="text" id="filter-patr" class="input input-sm" placeholder="Фильтр по отчеству" oninput="loadDeclensions()">
+      </div>
+    </div>
+
+    <div class="card" style="overflow-x:auto">
+      <table id="declension-table">
+        <thead>
+          <tr>
+            <th>Фамилия</th>
+            <th>Имя</th>
+            <th>Отчество</th>
+            <th>Склонённая фамилия</th>
+            <th style="text-align:center">Не скл.</th>
+            <th>Склонённое имя</th>
+            <th style="text-align:center">Не скл.</th>
+            <th>Склонённое отчество</th>
+            <th style="text-align:center">Не скл.</th>
+            <th>Действия</th>
+          </tr>
+        </thead>
+        <tbody></tbody>
+      </table>
+    </div>
+  </div>
+
+  <script>
+    window.__CSRF_TOKEN = '<%= csrfToken %>';
+
+    const _origFetch = window.fetch.bind(window);
+    window.fetch = function(input, init = {}) {
+      init.credentials = 'include';
+      const method = (init.method || 'GET').toUpperCase();
+      if (['POST','PUT','PATCH','DELETE'].includes(method)) {
+        if (!init.headers) init.headers = {};
+        init.headers['X-CSRF-Token'] = window.__CSRF_TOKEN || '';
+      }
+      return _origFetch(input, init);
+    };
+
+    document.getElementById('logout-btn').addEventListener('click', async () => {
+      await fetch('/api/logout', { method: 'POST' });
+      window.location.href = '/login';
+    });
+
+    function esc(s) { return (s || '').replace(/[&<>"]/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;'}[c])); }
+
+    function autoDeclineLast(name, gender) {
+      if (!name) return '';
+      if (gender === 'f') {
+        if (name.endsWith('ая')) return name.slice(0, -2) + 'ой';
+        if (name.endsWith('яя')) return name.slice(0, -2) + 'ей';
+        if (name.endsWith('а')) return name.slice(0, -1) + 'ой';
+        if (name.endsWith('я')) return name.slice(0, -1) + 'е';
+        if (name.endsWith('ова') || name.endsWith('ева') || name.endsWith('ина')) return name.slice(0, -1) + 'ой';
+        return name + 'ой';
+      }
+      if (name.endsWith('ов') || name.endsWith('ев') || name.endsWith('ин') || name.endsWith('ёв')) return name + 'у';
+      if (name.endsWith('ий') || name.endsWith('ый')) return name.slice(0, -2) + 'ому';
+      if (name.endsWith('ой')) return name.slice(0, -2) + 'ому';
+      return name + 'у';
+    }
+
+    function autoDeclineFirst(name, gender) {
+      if (!name) return '';
+      if (gender === 'f') {
+        if (name.endsWith('а') || name.endsWith('я')) return name.slice(0, -1) + 'е';
+        return name + 'е';
+      }
+      if (name.endsWith('й') || name.endsWith('ь')) return name.slice(0, -1) + 'ю';
+      if (name.endsWith('а') || name.endsWith('я')) return name.slice(0, -1) + 'е';
+      return name + 'у';
+    }
+
+    function autoDeclinePatr(name, gender) {
+      if (!name) return '';
+      if (gender === 'f') {
+        if (name.endsWith('на')) return name.slice(0, -1) + 'е';
+        return name + 'е';
+      }
+      if (name.endsWith('ич')) return name + 'у';
+      if (name.endsWith('на')) return name.slice(0, -1) + 'е';
+      return name + 'у';
+    }
+
+    function detectGender(patronymic) {
+      if (!patronymic) return 'm';
+      const last = patronymic.toLowerCase();
+      if (/вна|чна|нична$/.test(last)) return 'f';
+      return 'm';
+    }
+
+    async function loadDeclensions() {
+      const last_name = document.getElementById('filter-last').value;
+      const first_name = document.getElementById('filter-first').value;
+      const patronymic = document.getElementById('filter-patr').value;
+
+      const params = new URLSearchParams();
+      if (last_name) params.set('last_name', last_name);
+      if (first_name) params.set('first_name', first_name);
+      if (patronymic) params.set('patronymic', patronymic);
+
+      const url = '/api/declensions' + (params.toString() ? '?' + params.toString() : '');
+      const res = await fetch(url);
+      const rows = await res.json();
+      renderTable(rows);
+    }
+
+    function renderTable(rows) {
+      const tbody = document.querySelector('#declension-table tbody');
+      tbody.innerHTML = rows.map((r, i) => {
+        const gender = detectGender(r.patronymic);
+        const autoLast = autoDeclineLast(r.last_name, gender);
+        const autoFirst = autoDeclineFirst(r.first_name, gender);
+        const autoPatr = autoDeclinePatr(r.patronymic, gender);
+
+        const currentLast = r.no_decline_last ? r.last_name : (r.last_name_declined || autoLast);
+        const currentFirst = r.no_decline_first ? r.first_name : (r.first_name_declined || autoFirst);
+        const currentPatr = r.no_decline_patr ? r.patronymic : (r.patronymic_declined || autoPatr);
+
+        return `
+        <tr data-idx="${i}">
+          <td>${esc(r.last_name)}</td>
+          <td>${esc(r.first_name)}</td>
+          <td>${esc(r.patronymic)}</td>
+          <td><input type="text" class="input input-sm decl-input" data-field="last_name_declined" data-idx="${i}" value="${esc(currentLast)}" placeholder="${esc(autoLast)}"></td>
+          <td style="text-align:center"><input type="checkbox" class="decl-cb" data-field="no_decline_last" data-idx="${i}" ${r.no_decline_last ? 'checked' : ''}></td>
+          <td><input type="text" class="input input-sm decl-input" data-field="first_name_declined" data-idx="${i}" value="${esc(currentFirst)}" placeholder="${esc(autoFirst)}"></td>
+          <td style="text-align:center"><input type="checkbox" class="decl-cb" data-field="no_decline_first" data-idx="${i}" ${r.no_decline_first ? 'checked' : ''}></td>
+          <td><input type="text" class="input input-sm decl-input" data-field="patronymic_declined" data-idx="${i}" value="${esc(currentPatr)}" placeholder="${esc(autoPatr)}"></td>
+          <td style="text-align:center"><input type="checkbox" class="decl-cb" data-field="no_decline_patr" data-idx="${i}" ${r.no_decline_patr ? 'checked' : ''}></td>
+          <td><button class="btn btn-sm btn-green" onclick="saveRow(${i})">Сохранить</button><span id="msg-${i}" class="msg"></span></td>
+        </tr>`;
+      }).join('');
+
+      window.__declensionRows = rows;
+
+      document.querySelectorAll('.decl-cb').forEach(cb => {
+        cb.addEventListener('change', function() {
+          const idx = this.dataset.idx;
+          const field = this.dataset.field;
+          const row = window.__declensionRows[idx];
+          const inputField = field.replace('no_decline_', '') + '_declined';
+          const inputEl = document.querySelector(`.decl-input[data-idx="${idx}"][data-field="${inputField}"]`);
+          if (this.checked) {
+            inputEl.value = field === 'no_decline_last' ? row.last_name : (field === 'no_decline_first' ? row.first_name : row.patronymic);
+            inputEl.disabled = true;
+          } else {
+            inputEl.disabled = false;
+          }
+        });
+      });
+
+      document.querySelectorAll('.decl-cb:checked').forEach(cb => {
+        const idx = cb.dataset.idx;
+        const field = cb.dataset.field;
+        const inputField = field.replace('no_decline_', '') + '_declined';
+        const inputEl = document.querySelector(`.decl-input[data-idx="${idx}"][data-field="${inputField}"]`);
+        if (inputEl) inputEl.disabled = true;
+      });
+    }
+
+    async function saveRow(idx) {
+      const row = window.__declensionRows[idx];
+      const lastInput = document.querySelector(`.decl-input[data-idx="${idx}"][data-field="last_name_declined"]`);
+      const firstInput = document.querySelector(`.decl-input[data-idx="${idx}"][data-field="first_name_declined"]`);
+      const patrInput = document.querySelector(`.decl-input[data-idx="${idx}"][data-field="patronymic_declined"]`);
+      const lastCb = document.querySelector(`.decl-cb[data-idx="${idx}"][data-field="no_decline_last"]`);
+      const firstCb = document.querySelector(`.decl-cb[data-idx="${idx}"][data-field="no_decline_first"]`);
+      const patrCb = document.querySelector(`.decl-cb[data-idx="${idx}"][data-field="no_decline_patr"]`);
+
+      const msgEl = document.getElementById(`msg-${idx}`);
+
+      const body = {
+        last_name: row.last_name,
+        first_name: row.first_name,
+        patronymic: row.patronymic,
+        last_name_declined: lastCb.checked ? '' : lastInput.value,
+        first_name_declined: firstCb.checked ? '' : firstInput.value,
+        patronymic_declined: patrCb.checked ? '' : patrInput.value,
+        no_decline_last: lastCb.checked,
+        no_decline_first: firstCb.checked,
+        no_decline_patr: patrCb.checked
+      };
+
+      try {
+        const res = await fetch('/api/declensions', {
+          method: 'PUT',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify(body)
+        });
+        const data = await res.json();
+        if (res.ok) {
+          msgEl.textContent = 'Сохранено';
+          msgEl.className = 'msg msg-ok';
+          loadDeclensions();
+        } else {
+          msgEl.textContent = data.error || 'Ошибка';
+          msgEl.className = 'msg msg-err';
+        }
+      } catch (e) {
+        msgEl.textContent = 'Ошибка сети';
+        msgEl.className = 'msg msg-err';
+      }
+    }
+
+    loadDeclensions();
+  </script>
+</body>
+</html>
diff --git a/views/index.ejs b/views/index.ejs
index d00ef14..023fc13 100644
--- a/views/index.ejs
+++ b/views/index.ejs
@@ -13,6 +13,7 @@
     <nav class="nav">
       <a href="/" class="btn">Список учеников</a>
       <a href="/import" class="btn btn-green">Импорт XLS</a>
+      <a href="/declension" class="btn" style="background:#2a7d5a">Склонение ФИО</a>
       <a href="/history" class="btn" style="background:#5a3e85">История</a>
       <span class="user-bar"><%= user ? user.name : '' %></span>
       <button id="logout-btn" class="btn btn-logout">Выйти</button>