My Fat Friend is a play by Charles Laurence.

The comedy is an ugly duckling tale about an overweight young woman who attracts the attention of a potential suitor. With the help of her friends/roommates, she undergoes a diet and exercise regime to shed the extra pounds she assumes she needs to lose in order to hold the man's attention.

The play premiered on November 6, 1972 at the Theatre Royal, Brighton, where it ran for one week before transferring to the Rex Theatre in Wilmslow for another week's engagement. On December 6, it opened in London's West End at the Globe Theatre, where it enjoyed a modest run despite lukewarm reviews. The cast, directed by Eric Thompson, included Jennie Linden and Kenneth Williams. John Inman also appeared in the show, before becoming a television star in the BBC department-store comedy Are You Being Served?.