diff --git a/A00_Common/spreadsheet/spreadsheet.ts b/A00_Common/spreadsheet/spreadsheet.ts
index 1597924a..f53be2df 100644
--- a/A00_Common/spreadsheet/spreadsheet.ts
+++ b/A00_Common/spreadsheet/spreadsheet.ts
@@ -244,6 +244,7 @@ export function createSpreadsheet(
     recalc() {
       ctx.engine.rebuild(ctx.book);
       grid.render();
+      for (const p of others) p.refresh();
       return ctx.engine.snapshot();
     },
     destroy() {
diff --git a/A00_Common/spreadsheet/spreadsheet_extras.ts b/A00_Common/spreadsheet/spreadsheet_extras.ts
index bcb24ea3..47bc79f1 100644
--- a/A00_Common/spreadsheet/spreadsheet_extras.ts
+++ b/A00_Common/spreadsheet/spreadsheet_extras.ts
@@ -2,19 +2,22 @@
  * spreadsheet_extras.ts  (주인 D)
  * 2단계 부품 잇기(sub1 파일들의 「잇는 법」) — 찾기 패널 · 메모 풍선(마우스 올림) · 메모 편집(Shift+F2) ·
  * 서식 붓(수식 입력줄 앞 단추 · 두 번 누르면 계속 · Esc 끔) · 골라 붙여넣기(Ctrl+Shift+V → 값만 · 서식만 · 수식만) ·
- * 도구 모음을 누른 뒤 초점을 격자로 되돌림.
+ * 도구 모음을 누른 뒤 초점을 격자로 되돌림 · 정렬(↑ ↓ 정렬…) · 자동 필터(단추 · Ctrl+Shift+L · Alt+↓).
  * 빨간 세모는 C 격자 · 우클릭 [메모 …] 는 E 메뉴 몫(브레인 배정).
  * ========================================================================== */
 
 import { el } from "@ui/ui_template_elements";
+import { parseRange } from "./spreadsheet_address";
 import { parseClipboard } from "./spreadsheet_clipboard";
 import { attachComments, getComment, setComment } from "./spreadsheet_comments";
 import type { Editor } from "./spreadsheet_editor";
+import { attachFilter, toggleFilter } from "./spreadsheet_filter";
 import { mountFindPanel } from "./spreadsheet_find_panel";
 import { createFormatPainter } from "./spreadsheet_format_painter";
 import type { KeyHooks } from "./spreadsheet_keys";
 import type { MouseHooks } from "./spreadsheet_mouse";
 import { pasteSpecial, type PasteSpecialMode } from "./spreadsheet_paste_special";
+import { openSortDialog, sortSelection } from "./spreadsheet_sort_dialog";
 import type { PartHandle, SpreadsheetContext } from "./spreadsheet_view_types";
 
 const TEXT = {
@@ -22,6 +25,10 @@ const TEXT = {
   pasteTitle: "골라 붙여넣기",
   modes: { 값: "값만", 서식: "서식만", 수식: "수식만" } as Record<PasteSpecialMode, string>,
   memo: "메모 — Ctrl+Enter 또는 밖을 누르면 적용 · Esc 취소",
+  sortAsc: "오름차순 정렬(활성 칸 열 기준)",
+  sortDesc: "내림차순 정렬(활성 칸 열 기준)",
+  sortDialog: "정렬 — 기준 여럿 · 머리 행",
+  filter: "자동 필터 켜기 · 끄기(Ctrl+Shift+L · 머리 칸에서 Alt+↓ 값 목록)",
 };
 
 export interface Extras {
@@ -108,6 +115,33 @@ export function attachExtras(
   });
   if (!ctx.readOnly) ed.bar.prepend(brush);
 
+  // ── 정렬 · 필터(sub3) — 수식 입력줄 앞 데이터 단추 ───────────────────────
+  const filter = attachFilter(ctx);
+  let closeSort: (() => void) | null = null;
+  const dataButton = (text: string, title: string, run: () => void, dialog = false) => {
+    const b = el("button", { className: "ss-brush", text, attrs: { type: "button", title } });
+    b.addEventListener("click", () => {
+      run();
+      if (!dialog) back();
+    });
+    return b;
+  };
+  const data = [
+    dataButton("↑", TEXT.sortAsc, () => sortSelection(ctx, false)),
+    dataButton("↓", TEXT.sortDesc, () => sortSelection(ctx, true)),
+    dataButton(
+      "정렬…",
+      TEXT.sortDialog,
+      () => {
+        closeSort?.();
+        closeSort = openSortDialog(ctx);
+      },
+      true,
+    ),
+    dataButton("필터", TEXT.filter, () => toggleFilter(ctx)),
+  ];
+  if (!ctx.readOnly) brush.after(...data);
+
   // ── 골라 붙여넣기 ─────────────────────────────────────────────────────────
   let armed = false;
   const picker = el("div", { className: "ss-pick", attrs: { hidden: "", title: TEXT.pasteTitle } });
@@ -167,6 +201,8 @@ export function attachExtras(
     root: null,
     refresh: () => showBrush(),
     destroy() {
+      closeSort?.();
+      data.forEach((b) => b.remove());
       ctx.root.removeEventListener("paste", onPaste, true);
       toolbarRoot?.removeEventListener("click", onToolbarClick);
       toolbarRoot?.removeEventListener("change", back);
@@ -181,6 +217,15 @@ export function attachExtras(
       find: (replace) => find.open(replace),
       pasteSpecial: () => (armed = true),
       comment: editMemo,
+      filter: () => toggleFilter(ctx),
+      dropdown() {
+        const f = ctx.sheet().필터;
+        const g = f && parseRange(f.범위);
+        const { r, c } = ctx.selection.활성;
+        if (!g || r !== g.r0 || c < g.c0 || c > g.c1) return false;
+        filter.open(c);
+        return true;
+      },
       escape() {
         painter.clear();
         sticky = false;
@@ -203,6 +248,6 @@ export function attachExtras(
         put(comments.root!, hit.r, hit.c); // showBalloon 의 cellBox 자리 → 화면 자리로 고침
       },
     },
-    parts: [find, comments, self],
+    parts: [find, comments, filter, self],
   };
 }
diff --git a/A00_Common/spreadsheet/spreadsheet_keys.ts b/A00_Common/spreadsheet/spreadsheet_keys.ts
index 22315c3a..a23180e1 100644
--- a/A00_Common/spreadsheet/spreadsheet_keys.ts
+++ b/A00_Common/spreadsheet/spreadsheet_keys.ts
@@ -41,6 +41,10 @@ export interface KeyHooks {
   comment?(): void;
   /** 고름 중 Esc(서식 붓 끄기 등) */
   escape?(): void;
+  /** Ctrl+Shift+L 필터 켜기 · 끄기 */
+  filter?(): void;
+  /** Alt+↓ — 필터 머리 칸이면 값 목록을 열고 true */
+  dropdown?(): boolean;
 }
 
 export function attachKeys(ctx: SpreadsheetContext, ed: Editor, hooks: KeyHooks = {}): () => void {
@@ -97,6 +101,7 @@ export function attachKeys(ctx: SpreadsheetContext, ed: Editor, hooks: KeyHooks
     const sheet = ctx.sheet();
     const sel = ctx.selection;
     const arrow = ARROWS[e.key];
+    if (e.altKey && e.key === "ArrowDown" && hooks.dropdown?.()) return true;
     if (arrow && !e.altKey) {
       go(move(sheet, sel, arrow[0], arrow[1], { extend: e.shiftKey, jump: ctrl }));
       return true;
@@ -135,6 +140,10 @@ export function attachKeys(ctx: SpreadsheetContext, ed: Editor, hooks: KeyHooks
           if (!hooks.find) return false;
           hooks.find(k === "h");
           return true;
+        case "l":
+          if (!e.shiftKey || !hooks.filter) return false;
+          hooks.filter();
+          return true;
         case "v":
           if (e.shiftKey) hooks.pasteSpecial?.();
           return false; // paste 사건은 그대로 — E 클립보드 · 골라 붙여넣기가 받음
diff --git a/A00_Common/spreadsheet/spreadsheet_selection.ts b/A00_Common/spreadsheet/spreadsheet_selection.ts
index 64449dcf..779324dc 100644
--- a/A00_Common/spreadsheet/spreadsheet_selection.ts
+++ b/A00_Common/spreadsheet/spreadsheet_selection.ts
@@ -51,7 +51,11 @@ export function mergeAt(sheet: Sheet, r: number, c: number): CellRange {
   return merges(sheet).find((m) => inRange(m, r, c)) ?? { r0: r, c0: c, r1: r, c1: c };
 }
 
-export const rowHidden = (sheet: Sheet, r: number): boolean => !!sheet.행?.[String(r + 1)]?.숨김;
+/** 숨긴 행 · 필터로 걸러진 행(방향키 · Enter 가 건너뜀 — 엑셀) */
+export function rowHidden(sheet: Sheet, r: number): boolean {
+  const row = sheet.행?.[String(r + 1)];
+  return !!(row?.숨김 || row?.걸러짐);
+}
 
 export function colHidden(sheet: Sheet, c: number): boolean {
   const cols = sheet.열;