diff --git a/src/main/java/org/quantumbadger/redreader/common/PrefsUtility.java b/src/main/java/org/quantumbadger/redreader/common/PrefsUtility.java
index 1262439fb..75c8d0003 100644
--- a/src/main/java/org/quantumbadger/redreader/common/PrefsUtility.java
+++ b/src/main/java/org/quantumbadger/redreader/common/PrefsUtility.java
@@ -595,7 +595,8 @@ public enum AppearancePostSubtitleItem {
 		SPOILER,
 		NSFW,
 		UPVOTE_RATIO,
-		COMMENTS
+		COMMENTS,
+		LOCKED
 	}
 
 	public static EnumSet<AppearancePostSubtitleItem> appearance_post_subtitle_items() {
diff --git a/src/main/java/org/quantumbadger/redreader/common/RRThemeAttributes.java b/src/main/java/org/quantumbadger/redreader/common/RRThemeAttributes.java
index 38d9c47e2..c135ac397 100644
--- a/src/main/java/org/quantumbadger/redreader/common/RRThemeAttributes.java
+++ b/src/main/java/org/quantumbadger/redreader/common/RRThemeAttributes.java
@@ -37,6 +37,8 @@ public class RRThemeAttributes {
 	public final int rrCommentBodyCol;
 	public final int rrMainTextCol;
 	public final int colorAccent;
+	public final int rrLockedpostBackCol;
+	public final int rrLockedpostTextCol;
 
 	private final EnumSet<PrefsUtility.AppearanceCommentHeaderItem> mCommentHeaderItems;
 
@@ -57,6 +59,8 @@ public RRThemeAttributes(final Context context) {
 				R.attr.rrCommentHeaderCol,
 				R.attr.rrCommentBodyCol,
 				R.attr.rrMainTextCol,
+				R.attr.rrLockedpostBackCol,
+				R.attr.rrLockedpostTextCol,
 				com.google.android.material.R.attr.colorAccent
 		});
 
@@ -72,6 +76,8 @@ public RRThemeAttributes(final Context context) {
 		rrCommentBodyCol = appearance.getColor(9, 255);
 		rrMainTextCol = appearance.getColor(10, 255);
 		colorAccent = appearance.getColor(11, 255);
+		rrLockedpostBackCol = appearance.getColor(12, 255);
+		rrLockedpostTextCol = appearance.getColor(13, 255);
 
 		appearance.recycle();
 
diff --git a/src/main/java/org/quantumbadger/redreader/reddit/prepared/RedditPreparedPost.java b/src/main/java/org/quantumbadger/redreader/reddit/prepared/RedditPreparedPost.java
index ae0c90f1a..a72c5b377 100644
--- a/src/main/java/org/quantumbadger/redreader/reddit/prepared/RedditPreparedPost.java
+++ b/src/main/java/org/quantumbadger/redreader/reddit/prepared/RedditPreparedPost.java
@@ -178,7 +178,9 @@ public SpannableStringBuilder buildSubtitle(
 				R.attr.rrFlairBackCol,
 				R.attr.rrFlairTextCol,
 				R.attr.rrGoldTextCol,
-				R.attr.rrGoldBackCol
+				R.attr.rrGoldBackCol,
+				R.attr.rrLockedpostTextCol,
+				R.attr.rrLockedpostBackCol
 		});
 
 		final int boldCol;
@@ -194,6 +196,8 @@ public SpannableStringBuilder buildSubtitle(
 		final int rrFlairTextCol = appearance.getColor(4, 255);
 		final int rrGoldTextCol = appearance.getColor(5, 255);
 		final int rrGoldBackCol = appearance.getColor(6, 255);
+		final int rrLockedpostTextCol = appearance.getColor(7, 255);
+		final int rrLockedpostBackCol = appearance.getColor(8, 255);
 
 		appearance.recycle();
 
@@ -253,6 +257,22 @@ public SpannableStringBuilder buildSubtitle(
 			}
 		}
 
+		if(mPostSubtitleItems.contains(PrefsUtility.AppearancePostSubtitleItem.LOCKED)) {
+			if(src.isLocked()) {
+				postListDescSb.append(
+						" "
+								+ context.getString(R.string.locked)
+								+ " ",
+						BetterSSB.BOLD
+								| BetterSSB.FOREGROUND_COLOR
+								| BetterSSB.BACKGROUND_COLOR,
+						rrLockedpostTextCol,
+						rrLockedpostBackCol,
+						1f);
+				postListDescSb.append("  ", 0);
+			}
+		}
+
 		if(mPostSubtitleItems.contains(PrefsUtility.AppearancePostSubtitleItem.FLAIR)) {
 			if(src.getFlairText() != null) {
 				postListDescSb.append(
@@ -653,6 +673,15 @@ private String buildAccessibilityEmbellishments(
 			}
 		}
 
+		if(mPostSubtitleItems.contains(PrefsUtility.AppearancePostSubtitleItem.LOCKED)) {
+			if(src.isLocked()) {
+				a11yEmbellish
+						.append(context.getString(
+								R.string.accessibility_subtitle_lockedpost))
+						.append(separator);
+			}
+		}
+
 		if(mPostSubtitleItems.contains(PrefsUtility.AppearancePostSubtitleItem.FLAIR)) {
 			if(src.getFlairText() != null) {
 				a11yEmbellish
diff --git a/src/main/res/values/arrays.xml b/src/main/res/values/arrays.xml
index 9d3502316..8300980f8 100644
--- a/src/main/res/values/arrays.xml
+++ b/src/main/res/values/arrays.xml
@@ -873,6 +873,7 @@
 		<item>@string/pref_appearance_post_subtitle_items_sticky</item>
 		<item>@string/pref_appearance_post_subtitle_items_spoiler</item>
 		<item>@string/pref_appearance_post_subtitle_items_nsfw</item>
+		<item>@string/pref_appearance_post_subtitle_items_locked</item>
 	</string-array>
 
 	<!-- Constants. Do not change. -->
@@ -889,6 +890,7 @@
 		<item>sticky</item>
 		<item>spoiler</item>
 		<item>nsfw</item>
+		<item>locked</item>
 	</string-array>
 
 	<!-- Constants. Do not change. -->
@@ -903,6 +905,7 @@
 		<item>sticky</item>
 		<item>spoiler</item>
 		<item>nsfw</item>
+		<item>locked</item>
 	</string-array>
 
 	<!-- 2020-02-05 -->
diff --git a/src/main/res/values/attrs.xml b/src/main/res/values/attrs.xml
index e18c4eba0..2c2788d73 100644
--- a/src/main/res/values/attrs.xml
+++ b/src/main/res/values/attrs.xml
@@ -55,6 +55,8 @@
     <attr name="rrGoldBackCol" format="color" />
     <attr name="rrGoldTextCol" format="color" />
 	<attr name="rrPostInlinePreviewDivider" format="color" />
+	<attr name="rrLockedpostBackCol" format="color" />
+	<attr name="rrLockedpostTextCol" format="color" />
 
     <attr name="rrCommentBodyCol" format="color" />
     <attr name="rrCommentHeaderCol" format="color" />
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index 4d1f752c7..1a275bfb5 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -1902,4 +1902,9 @@
 	<string name="album_grid_pref_horizontal_padding">Horizontal padding</string>
 
 	<string name="album_pref_compact_title">Compact title</string>
+
+	<!-- 2024-09-01 -->
+	<string name="locked">LOCKED</string>
+	<string name="pref_appearance_post_subtitle_items_locked">Locked tag</string>
+	<string name="accessibility_subtitle_lockedpost">Locked post.</string>
 </resources>
diff --git a/src/main/res/values/themes.xml b/src/main/res/values/themes.xml
index 0b1ceee85..c38f42539 100644
--- a/src/main/res/values/themes.xml
+++ b/src/main/res/values/themes.xml
@@ -91,6 +91,8 @@
         <item name="rrFlairTextCol">#AAAAAA</item>
         <item name="rrGoldBackCol">#B0923C</item>
         <item name="rrGoldTextCol">#000000</item>
+		<item name="rrLockedpostBackCol">#8B0000</item>
+		<item name="rrLockedpostTextCol">#FFFFFF</item>
 
 		<item name="rrPostToolbarCol">#181818</item>
 
@@ -195,6 +197,8 @@
 		<item name="rrFlairTextCol">#AAAAAA</item>
 		<item name="rrGoldBackCol">#B0923C</item>
 		<item name="rrGoldTextCol">#000000</item>
+		<item name="rrLockedpostBackCol">#8B0000</item>
+		<item name="rrLockedpostTextCol">#FFFFFF</item>
 
 		<!-- Comment -->
 
@@ -263,6 +267,8 @@
 		<item name="rrFlairTextCol">#AAAAAA</item>
 		<item name="rrGoldBackCol">#B0923C</item>
 		<item name="rrGoldTextCol">#000000</item>
+		<item name="rrLockedpostBackCol">#8B0000</item>
+		<item name="rrLockedpostTextCol">#FFFFFF</item>
 
 		<item name="rrPostToolbarCol">#000000</item>
 
@@ -387,6 +393,8 @@
         <item name="rrFlairTextCol">#444444</item>
         <item name="rrGoldBackCol">#FFDF52</item>
         <item name="rrGoldTextCol">#000000</item>
+		<item name="rrLockedpostBackCol">#8B0000</item>
+		<item name="rrLockedpostTextCol">#FFFFFF</item>
 
 		<item name="rrPostToolbarCol">#F2FBFB</item>