diff --git a/app/src/main/java/com/bitchat/android/ui/ChatViewModel.kt b/app/src/main/java/com/bitchat/android/ui/ChatViewModel.kt
index f40549b6..20e6544f 100644
--- a/app/src/main/java/com/bitchat/android/ui/ChatViewModel.kt
+++ b/app/src/main/java/com/bitchat/android/ui/ChatViewModel.kt
@@ -1675,6 +1675,11 @@ class ChatViewModel(
         geohashViewModel.blockUserInGeohash(targetNickname)
     }
 
+    /** True when this Nostr pubkey is blocked for geohash/location chats. */
+    fun isGeohashPubkeyBlocked(pubkeyHex: String): Boolean {
+        return dataManager.isGeohashUserBlocked(pubkeyHex.lowercase())
+    }
+
     // MARK: - Navigation Management
     
     fun showAppInfo() {
diff --git a/app/src/main/java/com/bitchat/android/ui/CommandProcessor.kt b/app/src/main/java/com/bitchat/android/ui/CommandProcessor.kt
index 1cccfb19..b811c9c8 100644
--- a/app/src/main/java/com/bitchat/android/ui/CommandProcessor.kt
+++ b/app/src/main/java/com/bitchat/android/ui/CommandProcessor.kt
@@ -562,14 +562,20 @@ class CommandProcessor(
             when (val selectedChannel = viewModel.selectedLocationChannel.value) {
                 is com.bitchat.android.geohash.ChannelID.Mesh,
                 null -> {
-                    // Mesh channel: use Bluetooth mesh peer nicknames
-                    val peerNicknames = meshService.getPeerNicknames()
-                    peerNicknames.values.filter { it != peerNicknames[meshService.myPeerID] }
+                    meshMentionCandidates(
+                        peerNicknames = meshService.getPeerNicknames(),
+                        myPeerID = meshService.myPeerID.orEmpty(),
+                        isPeerBlocked = privateChatManager::isPeerBlocked
+                    )
                 }
                 
                 is com.bitchat.android.geohash.ChannelID.Location -> {
                     // Location channel: use geohash participants with collision-resistant suffixes
-                    val geohashPeople = viewModel.geohashPeople.value
+                    val geohashPeople = excludeBlockedGeohashPeople(
+                        people = viewModel.geohashPeople.value,
+                        pubkeyOf = { it.id },
+                        isBlocked = viewModel::isGeohashPubkeyBlocked
+                    )
                     val currentNickname = state.getNicknameValue()
                     val duplicateNames = duplicateGeohashBaseNames(geohashPeople)
                     
@@ -593,9 +599,11 @@ class CommandProcessor(
                 }
             }
         } else {
-            // Fallback to mesh peers if no viewModel available
-            val peerNicknames = meshService.getPeerNicknames()
-            peerNicknames.values.filter { it != peerNicknames[meshService.myPeerID] }
+            meshMentionCandidates(
+                peerNicknames = meshService.getPeerNicknames(),
+                myPeerID = meshService.myPeerID.orEmpty(),
+                isPeerBlocked = privateChatManager::isPeerBlocked
+            )
         }
         
         val filteredNicknames = filterMentionCandidates(peerCandidates, textAfterAt)
@@ -719,3 +727,30 @@ internal fun filterMentionCandidates(
         .sortedWith(String.CASE_INSENSITIVE_ORDER)
         .toList()
 }
+
+/**
+ * Mesh @-mention candidates excluding self and blocked peers (iOS ChatComposerCoordinator parity).
+ */
+internal fun meshMentionCandidates(
+    peerNicknames: Map<String, String>,
+    myPeerID: String,
+    isPeerBlocked: (String) -> Boolean
+): List<String> {
+    val myNickname = peerNicknames[myPeerID]
+    return peerNicknames
+        .filter { (peerID, nick) ->
+            nick != myNickname && !isPeerBlocked(peerID)
+        }
+        .values
+        .toList()
+}
+
+/**
+ * Drop geohash people whose Nostr pubkey is blocked before building mention tokens.
+ */
+internal fun <T> excludeBlockedGeohashPeople(
+    people: List<T>,
+    pubkeyOf: (T) -> String,
+    isBlocked: (String) -> Boolean
+): List<T> = people.filterNot { isBlocked(pubkeyOf(it)) }
+
diff --git a/app/src/test/java/com/bitchat/android/ui/MentionSuggestionsTest.kt b/app/src/test/java/com/bitchat/android/ui/MentionSuggestionsTest.kt
index 607aaf1e..d89aaaea 100644
--- a/app/src/test/java/com/bitchat/android/ui/MentionSuggestionsTest.kt
+++ b/app/src/test/java/com/bitchat/android/ui/MentionSuggestionsTest.kt
@@ -51,4 +51,34 @@ class MentionSuggestionsTest {
     fun `mention popup viewport is capped at five rows`() {
         assertEquals(5, MaxVisibleMentionSuggestions)
     }
+
+    @Test
+    fun `mesh mention candidates exclude self and blocked peers`() {
+        val nicknames = mapOf(
+            "aaaa" to "me",
+            "bbbb" to "alice",
+            "cccc" to "eve"
+        )
+        val candidates = meshMentionCandidates(
+            peerNicknames = nicknames,
+            myPeerID = "aaaa",
+            isPeerBlocked = { it == "cccc" }
+        )
+        assertEquals(listOf("alice"), candidates)
+    }
+
+    @Test
+    fun `geohash mention candidates exclude blocked pubkeys`() {
+        data class Person(val id: String, val name: String)
+        val people = listOf(
+            Person("aaaabbbb", "carol"),
+            Person("bbbbcccc", "blocked")
+        )
+        val kept = excludeBlockedGeohashPeople(
+            people = people,
+            pubkeyOf = { it.id },
+            isBlocked = { it == "bbbbcccc" }
+        )
+        assertEquals(listOf("carol"), kept.map { it.name })
+    }
 }