diff --git a/packages/scratch-gui/src/components/gui/gui.jsx b/packages/scratch-gui/src/components/gui/gui.jsx
index fadab2bf94..1c4ffd30e3 100644
--- a/packages/scratch-gui/src/components/gui/gui.jsx
+++ b/packages/scratch-gui/src/components/gui/gui.jsx
@@ -2,7 +2,7 @@ import classNames from 'classnames';
 import omit from 'lodash.omit';
 import PropTypes from 'prop-types';
 import React, {useEffect, useCallback} from 'react';
-import {FormattedMessage, useIntl} from 'react-intl';
+import {defineMessages, FormattedMessage, useIntl} from 'react-intl';
 import {connect} from 'react-redux';
 import MediaQuery from 'react-responsive';
 import {Tab, Tabs, TabList, TabPanel} from 'react-tabs';
@@ -47,6 +47,64 @@ import {setPlatform} from '../../reducers/platform.js';
 import {setTheme} from '../../reducers/settings.js';
 import {PLATFORM} from '../../lib/platform.js';
 
+const ariaMessages = defineMessages({
+    menuBar: {
+        id: 'gui.aria.menuBar',
+        defaultMessage: 'Menu topbar',
+        description: 'ARIA label for the top menu bar'
+    },
+    editor: {
+        id: 'gui.aria.editor',
+        defaultMessage: 'Editor',
+        description: 'ARIA label for the main editor area'
+    },
+    tabList: {
+        id: 'gui.aria.tabList',
+        defaultMessage: 'Tab list',
+        description: 'ARIA label for the editor tab list'
+    },
+    codePanel: {
+        id: 'gui.aria.codePanel',
+        defaultMessage: 'Code editor panel',
+        description: 'ARIA label for the code editor panel'
+    },
+    costumesPanel: {
+        id: 'gui.aria.costumesPanel',
+        defaultMessage: 'Costumes editor panel',
+        description: 'ARIA label for the costumes editor panel'
+    },
+    backdropsPanel: {
+        id: 'gui.aria.backdropsPanel',
+        defaultMessage: 'Backdrops editor panel',
+        description: 'ARIA label for the backdrops editor panel'
+    },
+    soundsPanel: {
+        id: 'gui.aria.soundsPanel',
+        defaultMessage: 'Sounds editor panel',
+        description: 'ARIA label for the sounds editor panel'
+    },
+    backpack: {
+        id: 'gui.aria.backpack',
+        defaultMessage: 'Backpack',
+        description: 'ARIA label for the backpack'
+    },
+    stageAndTarget: {
+        id: 'gui.aria.stageAndTarget',
+        defaultMessage: 'Stage and target',
+        description: 'ARIA label for stage and target area'
+    },
+    stage: {
+        id: 'gui.aria.stage',
+        defaultMessage: 'Stage',
+        description: 'ARIA label for the stage'
+    },
+    targetPane: {
+        id: 'gui.aria.targetPane',
+        defaultMessage: 'Target pane',
+        description: 'ARIA label for the target pane'
+    }
+});
+
 // Cache this value to only retrieve it once the first time.
 // Assume that it doesn't change for a session.
 let isRendererSupported = null;
@@ -274,7 +332,7 @@ const GUIComponent = props => {
                 ) : null}
                 {!menuBarHidden && <MenuBar
                     ariaRole="banner"
-                    ariaLabel="Menu topbar"
+                    ariaLabel={intl.formatMessage(ariaMessages.menuBar)}
                     accountNavOpen={accountNavOpen}
                     authorId={authorId}
                     authorThumbnailUrl={authorThumbnailUrl}
@@ -316,7 +374,7 @@ const GUIComponent = props => {
                 <Box className={classNames(boxStyles, styles.flexWrapper)}>
                     <Box
                         role="main"
-                        aria-label="Editor"
+                        aria-label={intl.formatMessage(ariaMessages.editor)}
                         className={styles.editorWrapper}
                     >
                         <Tabs
@@ -340,7 +398,7 @@ const GUIComponent = props => {
                         >
                             <Box
                                 role="region"
-                                aria-label="Tab List"
+                                aria-label={intl.formatMessage(ariaMessages.tabList)}
                             >
                                 <TabList className={tabClassNames.tabList}>
                                     <Tab className={tabClassNames.tab}>
@@ -396,7 +454,7 @@ const GUIComponent = props => {
                                 <Box
                                     className={styles.blocksWrapper}
                                     role="region"
-                                    aria-label="Code Editor Panel"
+                                    aria-label={intl.formatMessage(ariaMessages.codePanel)}
                                 >
                                     <Blocks
                                         key={`${blocksId}/${colorMode}/${theme}`}
@@ -427,7 +485,8 @@ const GUIComponent = props => {
                             </TabPanel>
                             <TabPanel className={tabClassNames.tabPanel}>
                                 {costumesTabVisible ? <CostumeTab
-                                    ariaLabel={targetIsStage ? 'Backdrops Editor Panel' : 'Costumes Editor Panel'}
+                                    ariaLabel={targetIsStage ? intl.formatMessage(ariaMessages.backdropsPanel) :
+                                        intl.formatMessage(ariaMessages.costumesPanel)}
                                     ariaRole="region"
                                     vm={vm}
                                     onNewLibraryBackdropClick={onNewLibraryBackdropClick}
@@ -437,7 +496,7 @@ const GUIComponent = props => {
                             <TabPanel className={tabClassNames.tabPanel}>
                                 {soundsTabVisible ?
                                     <SoundTab
-                                        ariaLabel="Sounds Editor Panel"
+                                        ariaLabel={intl.formatMessage(ariaMessages.soundsPanel)}
                                         ariaRole="region"
                                         vm={vm}
                                     /> : null}
@@ -447,14 +506,14 @@ const GUIComponent = props => {
                             <Backpack
                                 host={backpackHost}
                                 ariaRole="region"
-                                ariaLabel="Backpack"
+                                ariaLabel={intl.formatMessage(ariaMessages.backpack)}
                             />
                         ) : null}
                     </Box>
 
                     <Box
                         role="complementary"
-                        aria-label="Stage and Target"
+                        aria-label={intl.formatMessage(ariaMessages.stageAndTarget)}
                         className={classNames(styles.stageAndTargetWrapper, styles[stageSize])}
                     >
                         <StageWrapper
@@ -464,12 +523,12 @@ const GUIComponent = props => {
                             stageSize={stageSize}
                             vm={vm}
                             ariaRole="region"
-                            ariaLabel="Stage"
+                            ariaLabel={intl.formatMessage(ariaMessages.stage)}
                         />
                         <Box
                             className={styles.targetWrapper}
                             role="region"
-                            aria-label="Target Pane"
+                            aria-label={intl.formatMessage(ariaMessages.targetPane)}
                         >
                             <TargetPane
                                 stageSize={stageSize}