diff --git a/assets/l10n/app_en.arb b/assets/l10n/app_en.arb
index 38ddabeb87c..a370a001052 100644
--- a/assets/l10n/app_en.arb
+++ b/assets/l10n/app_en.arb
@@ -325,8 +325,8 @@
   "@composeBoxSendTooltip":  {
     "description": "Tooltip for send button in compose box."
   },
-  "composeBoxUnknownChannelName": "(unknown channel)",
-  "@composeBoxUnknownChannelName": {
+  "unknownChannelName": "(unknown channel)",
+  "@unknownChannelName": {
     "description": "Replacement name for channel when it cannot be found in the store."
   },
   "composeBoxTopicHintText": "Topic",
@@ -618,6 +618,14 @@
   "@channelFeedButtonTooltip": {
     "description": "Tooltip for button to navigate to a given channel's feed"
   },
+  "notifChannelConversationLabel": "#{channel} > {topic}",
+  "@notifChannelConversationLabel": {
+    "description": "Label for a channel conversation notification.",
+    "placeholders": {
+      "channel": {"type": "String", "example": "channel name"},
+      "topic": {"type": "String", "example": "topic name"}
+    }
+  },
   "notifGroupDmConversationLabel": "{senderFullName} to you and {numOthers, plural, =1{1 other} other{{numOthers} others}}",
   "@notifGroupDmConversationLabel": {
     "description": "Label for a group DM conversation notification.",
diff --git a/lib/generated/l10n/zulip_localizations.dart b/lib/generated/l10n/zulip_localizations.dart
index 96668a51e15..b9eef210719 100644
--- a/lib/generated/l10n/zulip_localizations.dart
+++ b/lib/generated/l10n/zulip_localizations.dart
@@ -539,7 +539,7 @@ abstract class ZulipLocalizations {
   ///
   /// In en, this message translates to:
   /// **'(unknown channel)'**
-  String get composeBoxUnknownChannelName;
+  String get unknownChannelName;
 
   /// Hint text for topic input widget in compose box.
   ///
@@ -937,6 +937,12 @@ abstract class ZulipLocalizations {
   /// **'Channel feed'**
   String get channelFeedButtonTooltip;
 
+  /// Label for a channel conversation notification.
+  ///
+  /// In en, this message translates to:
+  /// **'#{channel} > {topic}'**
+  String notifChannelConversationLabel(String channel, String topic);
+
   /// Label for a group DM conversation notification.
   ///
   /// In en, this message translates to:
diff --git a/lib/generated/l10n/zulip_localizations_ar.dart b/lib/generated/l10n/zulip_localizations_ar.dart
index 2d43c1aa34a..2fac2565af2 100644
--- a/lib/generated/l10n/zulip_localizations_ar.dart
+++ b/lib/generated/l10n/zulip_localizations_ar.dart
@@ -259,7 +259,7 @@ class ZulipLocalizationsAr extends ZulipLocalizations {
   String get composeBoxSendTooltip => 'Send';
 
   @override
-  String get composeBoxUnknownChannelName => '(unknown channel)';
+  String get unknownChannelName => '(unknown channel)';
 
   @override
   String get composeBoxTopicHintText => 'Topic';
@@ -487,6 +487,11 @@ class ZulipLocalizationsAr extends ZulipLocalizations {
   @override
   String get channelFeedButtonTooltip => 'Channel feed';
 
+  @override
+  String notifChannelConversationLabel(String channel, String topic) {
+    return '#$channel > $topic';
+  }
+
   @override
   String notifGroupDmConversationLabel(String senderFullName, int numOthers) {
     String _temp0 = intl.Intl.pluralLogic(
diff --git a/lib/generated/l10n/zulip_localizations_en.dart b/lib/generated/l10n/zulip_localizations_en.dart
index 9661863cfc8..7918499a8ab 100644
--- a/lib/generated/l10n/zulip_localizations_en.dart
+++ b/lib/generated/l10n/zulip_localizations_en.dart
@@ -259,7 +259,7 @@ class ZulipLocalizationsEn extends ZulipLocalizations {
   String get composeBoxSendTooltip => 'Send';
 
   @override
-  String get composeBoxUnknownChannelName => '(unknown channel)';
+  String get unknownChannelName => '(unknown channel)';
 
   @override
   String get composeBoxTopicHintText => 'Topic';
@@ -487,6 +487,11 @@ class ZulipLocalizationsEn extends ZulipLocalizations {
   @override
   String get channelFeedButtonTooltip => 'Channel feed';
 
+  @override
+  String notifChannelConversationLabel(String channel, String topic) {
+    return '#$channel > $topic';
+  }
+
   @override
   String notifGroupDmConversationLabel(String senderFullName, int numOthers) {
     String _temp0 = intl.Intl.pluralLogic(
diff --git a/lib/generated/l10n/zulip_localizations_fr.dart b/lib/generated/l10n/zulip_localizations_fr.dart
index 131ae623366..5079caad416 100644
--- a/lib/generated/l10n/zulip_localizations_fr.dart
+++ b/lib/generated/l10n/zulip_localizations_fr.dart
@@ -259,7 +259,7 @@ class ZulipLocalizationsFr extends ZulipLocalizations {
   String get composeBoxSendTooltip => 'Send';
 
   @override
-  String get composeBoxUnknownChannelName => '(unknown channel)';
+  String get unknownChannelName => '(unknown channel)';
 
   @override
   String get composeBoxTopicHintText => 'Topic';
@@ -487,6 +487,11 @@ class ZulipLocalizationsFr extends ZulipLocalizations {
   @override
   String get channelFeedButtonTooltip => 'Channel feed';
 
+  @override
+  String notifChannelConversationLabel(String channel, String topic) {
+    return '#$channel > $topic';
+  }
+
   @override
   String notifGroupDmConversationLabel(String senderFullName, int numOthers) {
     String _temp0 = intl.Intl.pluralLogic(
diff --git a/lib/generated/l10n/zulip_localizations_ja.dart b/lib/generated/l10n/zulip_localizations_ja.dart
index ecea737106f..dce85b01484 100644
--- a/lib/generated/l10n/zulip_localizations_ja.dart
+++ b/lib/generated/l10n/zulip_localizations_ja.dart
@@ -259,7 +259,7 @@ class ZulipLocalizationsJa extends ZulipLocalizations {
   String get composeBoxSendTooltip => 'Send';
 
   @override
-  String get composeBoxUnknownChannelName => '(unknown channel)';
+  String get unknownChannelName => '(unknown channel)';
 
   @override
   String get composeBoxTopicHintText => 'Topic';
@@ -487,6 +487,11 @@ class ZulipLocalizationsJa extends ZulipLocalizations {
   @override
   String get channelFeedButtonTooltip => 'Channel feed';
 
+  @override
+  String notifChannelConversationLabel(String channel, String topic) {
+    return '#$channel > $topic';
+  }
+
   @override
   String notifGroupDmConversationLabel(String senderFullName, int numOthers) {
     String _temp0 = intl.Intl.pluralLogic(
diff --git a/lib/generated/l10n/zulip_localizations_pl.dart b/lib/generated/l10n/zulip_localizations_pl.dart
index 8532ac3ecf2..bfb0d6cc782 100644
--- a/lib/generated/l10n/zulip_localizations_pl.dart
+++ b/lib/generated/l10n/zulip_localizations_pl.dart
@@ -259,7 +259,7 @@ class ZulipLocalizationsPl extends ZulipLocalizations {
   String get composeBoxSendTooltip => 'Wyślij';
 
   @override
-  String get composeBoxUnknownChannelName => '(nieznany kanał)';
+  String get unknownChannelName => '(unknown channel)';
 
   @override
   String get composeBoxTopicHintText => 'Wątek';
@@ -487,6 +487,11 @@ class ZulipLocalizationsPl extends ZulipLocalizations {
   @override
   String get channelFeedButtonTooltip => 'Strumień kanału';
 
+  @override
+  String notifChannelConversationLabel(String channel, String topic) {
+    return '#$channel > $topic';
+  }
+
   @override
   String notifGroupDmConversationLabel(String senderFullName, int numOthers) {
     String _temp0 = intl.Intl.pluralLogic(
diff --git a/lib/generated/l10n/zulip_localizations_ru.dart b/lib/generated/l10n/zulip_localizations_ru.dart
index 0337f8798c1..040e1d93fb6 100644
--- a/lib/generated/l10n/zulip_localizations_ru.dart
+++ b/lib/generated/l10n/zulip_localizations_ru.dart
@@ -259,7 +259,7 @@ class ZulipLocalizationsRu extends ZulipLocalizations {
   String get composeBoxSendTooltip => 'Send';
 
   @override
-  String get composeBoxUnknownChannelName => '(unknown channel)';
+  String get unknownChannelName => '(unknown channel)';
 
   @override
   String get composeBoxTopicHintText => 'Topic';
@@ -487,6 +487,11 @@ class ZulipLocalizationsRu extends ZulipLocalizations {
   @override
   String get channelFeedButtonTooltip => 'Channel feed';
 
+  @override
+  String notifChannelConversationLabel(String channel, String topic) {
+    return '#$channel > $topic';
+  }
+
   @override
   String notifGroupDmConversationLabel(String senderFullName, int numOthers) {
     String _temp0 = intl.Intl.pluralLogic(
diff --git a/lib/notifications/display.dart b/lib/notifications/display.dart
index 46ea95486aa..35f1b0ecc86 100644
--- a/lib/notifications/display.dart
+++ b/lib/notifications/display.dart
@@ -263,9 +263,10 @@ class NotificationDisplayManager {
     // the first.
     messagingStyle.conversationTitle = switch (data.recipient) {
       FcmMessageChannelRecipient(:var streamName?, :var topic) =>
-        '#$streamName > $topic',
+        zulipLocalizations.notifChannelConversationLabel(streamName, topic),
       FcmMessageChannelRecipient(:var topic) =>
-        '#(unknown channel) > $topic', // TODO get stream name from data
+        zulipLocalizations.notifChannelConversationLabel(
+          zulipLocalizations.unknownChannelName, topic), // TODO get stream name from data
       FcmMessageDmRecipient(:var allRecipientIds) when allRecipientIds.length > 2 =>
         zulipLocalizations.notifGroupDmConversationLabel(
           data.senderFullName, allRecipientIds.length - 2), // TODO use others' names, from data
diff --git a/lib/widgets/compose_box.dart b/lib/widgets/compose_box.dart
index 114e392bc7b..2e05b6aec98 100644
--- a/lib/widgets/compose_box.dart
+++ b/lib/widgets/compose_box.dart
@@ -483,7 +483,7 @@ class _StreamContentInputState extends State<_StreamContentInput> {
     final store = PerAccountStoreWidget.of(context);
     final zulipLocalizations = ZulipLocalizations.of(context);
     final streamName = store.streams[widget.narrow.streamId]?.name
-      ?? zulipLocalizations.composeBoxUnknownChannelName;
+      ?? zulipLocalizations.unknownChannelName;
     return _ContentInput(
       narrow: widget.narrow,
       destination: TopicNarrow(widget.narrow.streamId, _topicTextNormalized),
@@ -545,7 +545,7 @@ class _FixedDestinationContentInput extends StatelessWidget {
       case TopicNarrow(:final streamId, :final topic):
         final store = PerAccountStoreWidget.of(context);
         final streamName = store.streams[streamId]?.name
-          ?? zulipLocalizations.composeBoxUnknownChannelName;
+          ?? zulipLocalizations.unknownChannelName;
         return zulipLocalizations.composeBoxChannelContentHint(streamName, topic);
 
       case DmNarrow(otherRecipientIds: []): // The self-1:1 thread.
diff --git a/lib/widgets/message_list.dart b/lib/widgets/message_list.dart
index fff977a0d5f..8bceca646a6 100644
--- a/lib/widgets/message_list.dart
+++ b/lib/widgets/message_list.dart
@@ -317,6 +317,7 @@ class MessageListAppBarTitle extends StatelessWidget {
   Widget _buildStreamRow(BuildContext context, {
     ZulipStream? stream,
   }) {
+    final zulipLocalizations = ZulipLocalizations.of(context);
     // A null [Icon.icon] makes a blank space.
     final icon = stream != null ? iconDataForStream(stream) : null;
     return Row(
@@ -328,7 +329,8 @@ class MessageListAppBarTitle extends StatelessWidget {
       children: [
         Icon(size: 16, icon),
         const SizedBox(width: 4),
-        Flexible(child: Text(stream?.name ?? '(unknown channel)')),
+        Flexible(child: Text(
+          stream?.name ?? zulipLocalizations.unknownChannelName)),
       ]);
   }
 
@@ -1028,6 +1030,7 @@ class StreamMessageRecipientHeader extends StatelessWidget {
     //   https://github.com/zulip/zulip-mobile/issues/5511
     final store = PerAccountStoreWidget.of(context);
     final designVariables = DesignVariables.of(context);
+    final zulipLocalizations = ZulipLocalizations.of(context);
 
     final topic = message.topic;
 
@@ -1052,7 +1055,7 @@ class StreamMessageRecipientHeader extends StatelessWidget {
       final stream = store.streams[message.streamId];
       final streamName = stream?.name
         ?? message.displayRecipient
-        ?? '(unknown channel)'; // TODO(log)
+        ?? zulipLocalizations.unknownChannelName; // TODO(log)
 
       streamWidget = GestureDetector(
         onTap: () => Navigator.push(context,