diff --git a/src/Umbraco.Web.UI.Client/src/assets/lang/da-dk.ts b/src/Umbraco.Web.UI.Client/src/assets/lang/da-dk.ts
index 0b05cfbb8d..224cf316de 100644
--- a/src/Umbraco.Web.UI.Client/src/assets/lang/da-dk.ts
+++ b/src/Umbraco.Web.UI.Client/src/assets/lang/da-dk.ts
@@ -901,6 +901,7 @@ export default {
 		avatar: 'Avatar til',
 		header: 'Overskrift',
 		systemField: 'system felt',
+		readOnly: 'Skrivebeskyttet',
 		restore: 'Genskab',
 		generic: 'Generic',
 		media: 'Media',
diff --git a/src/Umbraco.Web.UI.Client/src/assets/lang/en-us.ts b/src/Umbraco.Web.UI.Client/src/assets/lang/en-us.ts
index 1c296f2a86..6f53119e14 100644
--- a/src/Umbraco.Web.UI.Client/src/assets/lang/en-us.ts
+++ b/src/Umbraco.Web.UI.Client/src/assets/lang/en-us.ts
@@ -936,6 +936,7 @@ export default {
 		skipToMenu: 'Skip to menu',
 		skipToContent: 'Skip to content',
 		restore: 'Restore',
+		readOnly: 'Read-only',
 		newVersionAvailable: 'New version available',
 	},
 	colors: {
diff --git a/src/Umbraco.Web.UI.Client/src/assets/lang/en.ts b/src/Umbraco.Web.UI.Client/src/assets/lang/en.ts
index 1830171106..27fb01708b 100644
--- a/src/Umbraco.Web.UI.Client/src/assets/lang/en.ts
+++ b/src/Umbraco.Web.UI.Client/src/assets/lang/en.ts
@@ -47,6 +47,7 @@ export default {
 		notify: 'Notifications',
 		protect: 'Public Access',
 		publish: 'Publish',
+		readOnly: 'Read-only',
 		refreshNode: 'Reload',
 		remove: 'Remove',
 		rename: 'Rename',
diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-split-view/workspace-split-view-variant-selector.element.ts b/src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-split-view/workspace-split-view-variant-selector.element.ts
index d7be226d99..f32f98bc68 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-split-view/workspace-split-view-variant-selector.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-split-view/workspace-split-view-variant-selector.element.ts
@@ -307,7 +307,9 @@ export class UmbWorkspaceSplitViewVariantSelectorElement extends UmbLitElement {
 
 	#renderReadOnlyTag(culture?: string | null) {
 		if (!culture) return nothing;
-		return this.#isReadOnly(culture) ? html`<uui-tag look="secondary">Read-only</uui-tag>` : nothing;
+		return this.#isReadOnly(culture)
+			? html`<uui-tag look="secondary">${this.localize.term('general_readOnly')}</uui-tag>`
+			: nothing;
 	}
 
 	#renderSplitViewButton(variant: UmbDocumentVariantOptionModel) {
diff --git a/src/Umbraco.Web.UI.Client/src/packages/language/app-language-select/app-language-select.element.ts b/src/Umbraco.Web.UI.Client/src/packages/language/app-language-select/app-language-select.element.ts
index 940bd928a5..4b76521814 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/language/app-language-select/app-language-select.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/language/app-language-select/app-language-select.element.ts
@@ -2,8 +2,18 @@ import { UmbLanguageCollectionRepository } from '../collection/index.js';
 import type { UmbLanguageDetailModel } from '../types.js';
 import { type UmbAppLanguageContext, UMB_APP_LANGUAGE_CONTEXT } from '../global-contexts/index.js';
 import type { UUIMenuItemEvent, UUIPopoverContainerElement } from '@umbraco-cms/backoffice/external/uui';
-import { css, html, customElement, state, repeat, ifDefined, query } from '@umbraco-cms/backoffice/external/lit';
+import {
+	css,
+	html,
+	customElement,
+	state,
+	repeat,
+	ifDefined,
+	query,
+	nothing,
+} from '@umbraco-cms/backoffice/external/lit';
 import { UmbLitElement } from '@umbraco-cms/backoffice/lit-element';
+import { UMB_CURRENT_USER_CONTEXT } from '@umbraco-cms/backoffice/current-user';
 
 @customElement('umb-app-language-select')
 export class UmbAppLanguageSelectElement extends UmbLitElement {
@@ -16,6 +26,9 @@ export class UmbAppLanguageSelectElement extends UmbLitElement {
 	@state()
 	private _appLanguage?: UmbLanguageDetailModel;
 
+	@state()
+	private _appLanguageIsReadOnly = false;
+
 	@state()
 	private _isOpen = false;
 
@@ -23,6 +36,12 @@ export class UmbAppLanguageSelectElement extends UmbLitElement {
 	#appLanguageContext?: UmbAppLanguageContext;
 	#languagesObserver?: any;
 
+	#currentUserAllowedLanguages?: Array<string>;
+	#currentUserHasAccessToAllLanguages?: boolean;
+
+	@state()
+	_disallowedLanguages: Array<UmbLanguageDetailModel> = [];
+
 	constructor() {
 		super();
 
@@ -30,6 +49,29 @@ export class UmbAppLanguageSelectElement extends UmbLitElement {
 			this.#appLanguageContext = instance;
 			this.#observeAppLanguage();
 		});
+
+		this.consumeContext(UMB_CURRENT_USER_CONTEXT, (context) => {
+			this.observe(context.languages, (languages) => {
+				this.#currentUserAllowedLanguages = languages;
+				this.#checkForLanguageAccess();
+			});
+
+			this.observe(context.hasAccessToAllLanguages, (hasAccessToAllLanguages) => {
+				this.#currentUserHasAccessToAllLanguages = hasAccessToAllLanguages;
+				this.#checkForLanguageAccess();
+			});
+		});
+	}
+
+	#checkForLanguageAccess() {
+		// find all disallowed languages
+		this._disallowedLanguages = this._languages?.filter((language) => {
+			if (this.#currentUserHasAccessToAllLanguages) {
+				return false;
+			}
+
+			return !this.#currentUserAllowedLanguages?.includes(language.unique);
+		});
 	}
 
 	async #observeAppLanguage() {
@@ -38,6 +80,10 @@ export class UmbAppLanguageSelectElement extends UmbLitElement {
 		this.observe(this.#appLanguageContext.appLanguage, (language) => {
 			this._appLanguage = language;
 		});
+
+		this.observe(this.#appLanguageContext.appLanguageReadOnlyState.isReadOnly, (isReadOnly) => {
+			this._appLanguageIsReadOnly = isReadOnly;
+		});
 	}
 
 	async #observeLanguages() {
@@ -46,6 +92,7 @@ export class UmbAppLanguageSelectElement extends UmbLitElement {
 		// TODO: listen to changes
 		if (data) {
 			this._languages = data.items;
+			this.#checkForLanguageAccess();
 		}
 	}
 
@@ -83,7 +130,11 @@ export class UmbAppLanguageSelectElement extends UmbLitElement {
 
 	#renderTrigger() {
 		return html`<button id="toggle" popovertarget="dropdown-popover">
-			${this._appLanguage?.name} <uui-symbol-expand .open=${this._isOpen}></uui-symbol-expand>
+			<span
+				>${this._appLanguage?.name}
+				${this._appLanguageIsReadOnly ? this.#renderReadOnlyTag(this._appLanguage?.unique) : nothing}</span
+			>
+			<uui-symbol-expand .open=${this._isOpen}></uui-symbol-expand>
 		</button>`;
 	}
 
@@ -98,13 +149,25 @@ export class UmbAppLanguageSelectElement extends UmbLitElement {
 							label=${ifDefined(language.name)}
 							@click-label=${this.#onLabelClick}
 							data-unique=${ifDefined(language.unique)}
-							?active=${language.unique === this._appLanguage?.unique}></uui-menu-item>
+							?active=${language.unique === this._appLanguage?.unique}>
+							${this.#isLanguageReadOnly(language.unique) ? this.#renderReadOnlyTag(language.unique) : nothing}
+						</uui-menu-item>
 					`,
 				)}
 			</umb-popover-layout>
 		</uui-popover-container>`;
 	}
 
+	#isLanguageReadOnly(culture?: string) {
+		if (!culture) return false;
+		return this._disallowedLanguages.find((language) => language.unique === culture) ? true : false;
+	}
+
+	#renderReadOnlyTag(culture?: string) {
+		if (!culture) return nothing;
+		return html`<uui-tag slot="badge" look="secondary">${this.localize.term('general_readOnly')}</uui-tag>`;
+	}
+
 	static override styles = [
 		css`
 			:host {
diff --git a/src/Umbraco.Web.UI.Client/src/packages/language/global-contexts/app-language.context.ts b/src/Umbraco.Web.UI.Client/src/packages/language/global-contexts/app-language.context.ts
index 6a0d4b7d8b..bb6da03b19 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/language/global-contexts/app-language.context.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/language/global-contexts/app-language.context.ts
@@ -6,30 +6,35 @@ import type { UmbControllerHost } from '@umbraco-cms/backoffice/controller-api';
 import { UmbContextBase } from '@umbraco-cms/backoffice/class-api';
 import type { UmbApi } from '@umbraco-cms/backoffice/extension-api';
 import { UMB_AUTH_CONTEXT } from '@umbraco-cms/backoffice/auth';
+import { UmbReadOnlyStateManager } from '@umbraco-cms/backoffice/utils';
+import { UMB_CURRENT_USER_CONTEXT } from '@umbraco-cms/backoffice/current-user';
 
 // TODO: Make a store for the App Languages.
 // TODO: Implement default language end-point, in progress at backend team, so we can avoid getting all languages.
 export class UmbAppLanguageContext extends UmbContextBase<UmbAppLanguageContext> implements UmbApi {
-	#languageCollectionRepository: UmbLanguageCollectionRepository;
 	#languages = new UmbArrayState<UmbLanguageDetailModel>([], (x) => x.unique);
-	moreThanOneLanguage = this.#languages.asObservablePart((x) => x.length > 1);
 
 	#appLanguage = new UmbObjectState<UmbLanguageDetailModel | undefined>(undefined);
-	appLanguage = this.#appLanguage.asObservable();
+	public readonly appLanguage = this.#appLanguage.asObservable();
+	public readonly appLanguageCulture = this.#appLanguage.asObservablePart((x) => x?.unique);
 
-	appLanguageCulture = this.#appLanguage.asObservablePart((x) => x?.unique);
+	public readonly appLanguageReadOnlyState = new UmbReadOnlyStateManager(this);
 
-	appDefaultLanguage = createObservablePart(this.#languages.asObservable(), (languages) =>
+	public readonly appDefaultLanguage = createObservablePart(this.#languages.asObservable(), (languages) =>
 		languages.find((language) => language.isDefault),
 	);
 
-	getAppCulture() {
-		return this.#appLanguage.getValue()?.unique;
-	}
+	public readonly moreThanOneLanguage = this.#languages.asObservablePart((x) => x.length > 1);
+
+	#languageCollectionRepository = new UmbLanguageCollectionRepository(this);
+	#currentUserAllowedLanguages: Array<string> = [];
+	#currentUserHasAccessToAllLanguages = false;
+
+	#readOnlyStateIdentifier = 'UMB_LANGUAGE_PERMISSION_';
+	#localStorageKey = 'umb:appLanguage';
 
 	constructor(host: UmbControllerHost) {
 		super(host, UMB_APP_LANGUAGE_CONTEXT);
-		this.#languageCollectionRepository = new UmbLanguageCollectionRepository(this);
 
 		// TODO: We need to ensure this request is called every time the user logs in, but this should be done somewhere across the app and not here [JOV]
 		this.consumeContext(UMB_AUTH_CONTEXT, (authContext) => {
@@ -38,12 +43,46 @@ export class UmbAppLanguageContext extends UmbContextBase<UmbAppLanguageContext>
 				this.#observeLanguages();
 			});
 		});
+
+		this.consumeContext(UMB_CURRENT_USER_CONTEXT, (context) => {
+			this.observe(context.languages, (languages) => {
+				this.#currentUserAllowedLanguages = languages || [];
+				this.#setIsReadOnly();
+			});
+
+			this.observe(context.hasAccessToAllLanguages, (hasAccessToAllLanguages) => {
+				this.#currentUserHasAccessToAllLanguages = hasAccessToAllLanguages || false;
+				this.#setIsReadOnly();
+			});
+		});
+	}
+
+	getAppCulture() {
+		return this.#appLanguage.getValue()?.unique;
 	}
 
 	setLanguage(unique: string) {
-		const languages = this.#languages.getValue();
-		const language = languages.find((x) => x.unique === unique);
+		// clear the previous read-only state
+		const appLanguage = this.#appLanguage.getValue();
+		if (appLanguage?.unique) {
+			this.appLanguageReadOnlyState.removeState(this.#readOnlyStateIdentifier + appLanguage.unique);
+		}
+
+		// find the language
+		const language = this.#findLanguage(unique);
+
+		if (!language) {
+			throw new Error(`Language with unique ${unique} not found`);
+		}
+
+		// set the new language
 		this.#appLanguage.update(language);
+
+		// store the new language in local storage
+		localStorage.setItem(this.#localStorageKey, language?.unique);
+
+		// set the new read-only state
+		this.#setIsReadOnly();
 	}
 
 	async #observeLanguages() {
@@ -61,6 +100,17 @@ export class UmbAppLanguageContext extends UmbContextBase<UmbAppLanguageContext>
 	}
 
 	#initAppLanguage() {
+		// get the selected language from local storage
+		const uniqueFromLocalStorage = localStorage.getItem(this.#localStorageKey);
+
+		if (uniqueFromLocalStorage) {
+			const language = this.#findLanguage(uniqueFromLocalStorage);
+			if (language) {
+				this.setLanguage(language.unique);
+				return;
+			}
+		}
+
 		const defaultLanguage = this.#languages.getValue().find((x) => x.isDefault);
 		// TODO: do we always have a default language?
 		// do we always get the default language on the first request, or could it be on page 2?
@@ -68,6 +118,37 @@ export class UmbAppLanguageContext extends UmbContextBase<UmbAppLanguageContext>
 		if (!defaultLanguage?.unique) return;
 		this.setLanguage(defaultLanguage.unique);
 	}
+
+	#findLanguage(unique: string) {
+		return this.#languages.getValue().find((x) => x.unique === unique);
+	}
+
+	#setIsReadOnly() {
+		const appLanguage = this.#appLanguage.getValue();
+
+		if (!appLanguage) {
+			this.appLanguageReadOnlyState.clear();
+			return;
+		}
+
+		const unique = this.#readOnlyStateIdentifier + appLanguage.unique;
+		this.appLanguageReadOnlyState.removeState(unique);
+
+		if (this.#currentUserHasAccessToAllLanguages) {
+			return;
+		}
+
+		const isReadOnly = !this.#currentUserAllowedLanguages.includes(appLanguage.unique);
+
+		if (isReadOnly) {
+			const readOnlyState = {
+				unique,
+				message: 'You do not have permission to edit to this culture',
+			};
+
+			this.appLanguageReadOnlyState.addState(readOnlyState);
+		}
+	}
 }
 
 // Default export to enable this as a globalContext extension js: