diff --git a/Content.Server/Chat/Systems/ChatSystem.Radio.cs b/Content.Server/Chat/Systems/ChatSystem.Radio.cs
index e764b9a387..a317d07afc 100644
--- a/Content.Server/Chat/Systems/ChatSystem.Radio.cs
+++ b/Content.Server/Chat/Systems/ChatSystem.Radio.cs
@@ -74,7 +74,7 @@ public sealed partial class ChatSystem
         }
 
         // Re-capitalize message since we removed the prefix.
-        message = SanitizeMessageCapital(source, message);
+        message = SanitizeMessageCapital(message);
 
         if (_inventory.TryGetSlotEntity(source, "ears", out var entityUid) &&
             TryComp(entityUid, out HeadsetComponent? headset))
diff --git a/Content.Server/Chat/Systems/ChatSystem.cs b/Content.Server/Chat/Systems/ChatSystem.cs
index 586b2e78d8..e6bb375f22 100644
--- a/Content.Server/Chat/Systems/ChatSystem.cs
+++ b/Content.Server/Chat/Systems/ChatSystem.cs
@@ -127,8 +127,9 @@ public sealed partial class ChatSystem : SharedChatSystem
             return;
 
         bool shouldCapitalize = (desiredType != InGameICChatType.Emote);
+        bool shouldPunctuate = _configurationManager.GetCVar(CCVars.ChatPunctuation);
 
-        message = SanitizeInGameICMessage(source, message, out var emoteStr, shouldCapitalize);
+        message = SanitizeInGameICMessage(source, message, out var emoteStr, shouldCapitalize, shouldPunctuate);
 
         // Was there an emote in the message? If so, send it.
         if (player != null && emoteStr != message && emoteStr != null)
@@ -423,11 +424,13 @@ public sealed partial class ChatSystem : SharedChatSystem
     }
 
     // ReSharper disable once InconsistentNaming
-    private string SanitizeInGameICMessage(EntityUid source, string message, out string? emoteStr, bool capitalize = true)
+    private string SanitizeInGameICMessage(EntityUid source, string message, out string? emoteStr, bool capitalize = true, bool punctuate = false)
     {
         var newMessage = message.Trim();
         if (capitalize)
-            newMessage = SanitizeMessageCapital(source, newMessage);
+            newMessage = SanitizeMessageCapital(newMessage);
+        if (punctuate)
+            newMessage = SanitizeMessagePeriod(newMessage);
         newMessage = FormattedMessage.EscapeText(newMessage);
 
         _sanitizer.TrySanitizeOutSmilies(newMessage, source, out newMessage, out emoteStr);
@@ -460,7 +463,7 @@ public sealed partial class ChatSystem : SharedChatSystem
             .Select(p => p.ConnectedClient);
     }
 
-    private string SanitizeMessageCapital(EntityUid source, string message)
+    private string SanitizeMessageCapital(string message)
     {
         if (string.IsNullOrEmpty(message))
             return message;
@@ -469,6 +472,16 @@ public sealed partial class ChatSystem : SharedChatSystem
         return message;
     }
 
+    private string SanitizeMessagePeriod(string message)
+    {
+        if (string.IsNullOrEmpty(message))
+            return message;
+        // Adds a period if the last character is a letter.
+        if (char.IsLetter(message[^1]))
+            message += ".";
+        return message;
+    }
+
     private void ClientDistanceToList(EntityUid source, int voiceRange, List<ICommonSession> playerSessions)
     {
         var ghosts = GetEntityQuery<GhostComponent>();
diff --git a/Content.Shared/CCVar/CCVars.cs b/Content.Shared/CCVar/CCVars.cs
index f52edee9d7..44c4bf26d3 100644
--- a/Content.Shared/CCVar/CCVars.cs
+++ b/Content.Shared/CCVar/CCVars.cs
@@ -1072,6 +1072,12 @@ namespace Content.Shared.CCVar
         public static readonly CVarDef<bool> FlavorText =
             CVarDef.Create("ic.flavor_text", false, CVar.SERVER | CVar.REPLICATED);
 
+        /// <summary>
+        /// Adds a period at the end of a sentence if the sentence ends in a letter.
+        /// </summary>
+        public static readonly CVarDef<bool> ChatPunctuation =
+            CVarDef.Create("ic.punctuation", false, CVar.SERVER);
+
         /*
          * Salvage
          */