Margaret Major Cleaves (b. February 13, 1946 in Texas, United States) is popular writer of over 45 romance novels since 1980 as her real name and under the pseudonym Ann Major (アン・メイジャー).

She is a founding member of the Romance Writers of America and the co-author of the article "The Contemporary Light Romance" which has been collected in the book Writing and Selling the Romance Novel.