diff --git a/src/public/app/services/i18n.ts b/src/public/app/services/i18n.ts
index 20ac6e286..ec1e55acf 100644
--- a/src/public/app/services/i18n.ts
+++ b/src/public/app/services/i18n.ts
@@ -2,15 +2,10 @@ import options from "./options.js";
 import i18next from "i18next";
 import i18nextHttpBackend from "i18next-http-backend";
 import server from "./server.js";
+import type { Locale } from "../../../services/i18n.js";
 
 let locales: Locale[] | null;
 
-// TODO: Deduplicate with server.
-export interface Locale {
-    id: string;
-    name: string;
-}
-
 export async function initLocale() {
     const locale = (options.get("locale") as string) || "en";
 
@@ -28,7 +23,7 @@ export async function initLocale() {
 
 export function getAvailableLocales() {
     if (!locales) {
-        throw new Error("Tried to load list of locales, but localization is not yet initialized.");
+        throw new Error("Tried to load list of locales, but localization is not yet initialized.")
     }
 
     return locales;
diff --git a/src/public/app/widgets/note_language.ts b/src/public/app/widgets/note_language.ts
index 216d46a88..5f4008d85 100644
--- a/src/public/app/widgets/note_language.ts
+++ b/src/public/app/widgets/note_language.ts
@@ -1,10 +1,11 @@
 import { Dropdown } from "bootstrap";
 import NoteContextAwareWidget from "./note_context_aware_widget.js";
-import { getAvailableLocales, type Locale } from "../services/i18n.js";
+import { getAvailableLocales } from "../services/i18n.js";
 import { t } from "i18next";
 import type { EventData } from "../components/app_context.js";
 import type FNote from "../entities/fnote.js";
 import attributes from "../services/attributes.js";
+import type { Locale } from "../../../services/i18n.js";
 
 const TPL = `\
 <div class="dropdown note-language-widget">
@@ -13,6 +14,12 @@ const TPL = `\
         <span class="caret"></span>
     </button>
     <div class="note-language-dropdown dropdown-menu dropdown-menu-left tn-dropdown-list"></div>
+
+    <style>
+        .note-language-dropdown [dir=rtl] {
+            text-align: right;
+        }
+    </style>
 </div>
 `;
 
@@ -56,6 +63,10 @@ export default class NoteLanguageWidget extends NoteContextAwareWidget {
         for (const locale of this.locales) {
             if (typeof locale === "object") {
                 const $title = $("<span>").text(locale.name);
+                if (locale.rtl) {
+                    $title.attr("dir", "rtl");
+                }
+
                 const $link = $('<a class="dropdown-item">')
                     .attr("data-language", locale.id)
                     .append('<span class="check">&check;</span> ')
@@ -64,6 +75,7 @@ export default class NoteLanguageWidget extends NoteContextAwareWidget {
                         const languageId = $link.attr("data-language") ?? "";
                         this.save(languageId);
                     })
+
                 this.$noteLanguageDropdown.append($link);
             } else {
                 this.$noteLanguageDropdown.append('<div class="dropdown-divider"></div>');
diff --git a/src/services/i18n.ts b/src/services/i18n.ts
index 03bf98d8c..4dd8d4519 100644
--- a/src/services/i18n.ts
+++ b/src/services/i18n.ts
@@ -6,6 +6,13 @@ import { join } from "path";
 import { getResourceDir } from "./utils.js";
 import hidden_subtree from "./hidden_subtree.js";
 
+export interface Locale {
+    id: string;
+    name: string;
+    /** `true` if the language is a right-to-left one, or `false` if it's left-to-right. */
+    rtl?: boolean;
+}
+
 export async function initializeTranslations() {
     const resourceDir = getResourceDir();
 
@@ -20,7 +27,7 @@ export async function initializeTranslations() {
     });
 }
 
-export function getLocales() {
+export function getLocales(): Locale[] {
     // TODO: Currently hardcoded, needs to read the list of available languages.
     return [
         {
@@ -59,19 +66,23 @@ export function getLocales() {
          */
         { // Arabic
             id: "ar",
-            name: "اَلْعَرَبِيَّةُ"
+            name: "اَلْعَرَبِيَّةُ",
+            rtl: true
         },
         { // Hebrew
             id: "he",
-            name: "עברית"
+            name: "עברית",
+            rtl: true
         },
         { // Kurdish
             id: "ku",
-            name: "کوردی"
+            name: "کوردی",
+            rtl: true
         },
         { // Persian
             id: "fa",
-            name: "فارسی"
+            name: "فارسی",
+            rtl: true
         }
     ];
 }