diff --git a/services/modules/replace_speaker/replaceSpeaker.js b/services/modules/replace_speaker/replaceSpeaker.js
index bcc36f8..6f21cdb 100644
--- a/services/modules/replace_speaker/replaceSpeaker.js
+++ b/services/modules/replace_speaker/replaceSpeaker.js
@@ -52,8 +52,16 @@ const module_exports = {
                 // Extract name if value is an object
                 const displayName = typeof value === 'string' ? value : value.name;
                 
-                // Replace speaker placeholder with display name
-                const regex = new RegExp(`\\b${placeholder}\\b`, 'g');
+                // Normalize placeholder for matching (remove case sensitivity)
+                const normalizedPlaceholder = placeholder.toLowerCase();
+                
+                // Replace all variations: speakerA, SpeakerA, SPEAKERA, speaker_a, Speaker A, etc.
+                // Matches with optional spaces, underscores, and parentheses
+                const regex = new RegExp(
+                    `\\b[Ss]peaker\\s*[_-]?\\s*${placeholder.charAt(placeholder.length - 1)}\\b|\\b${placeholder}\\b`,
+                    'gi'
+                );
+                
                 outputContent = outputContent.replace(regex, displayName);
             });