I did the Landmark Forum, Advanced Course, and the SELP program (more of an individualized course). Although I really like the landmark forum, I don't think it would help with stuttering although I can see it help with your confidence with speaking. If you stutter when you lack confidence and don't stutter when your confident then I could see it helping (These last two sentences kind of contradict themselves). I developed a stutter as an adult after I completed the Forum so I don't have a before/after comparison regarding that.