Adam Blatner (born Howard Blatner, 5 August 1937 – 1 October 2021) was a Life Fellow of the American Psychiatric Association, doubly Board Certified in Child/Adult Psychiatry), a Certified Trainer of Psychodrama and a psychology theorist. He was the author of the book Acting In, first published in 1973, which became the primary textbook for students of Psychodrama. He also wrote a number of other books and dozens of journal articles and chapters in textbooks, including the book (with his wife Allee Blatner) The Art of Play.