Before discussing memoirs that are written in the form of graphic novels, I would like to present a thumbnail definition of graphic novels, which are longer than comic books and are often a story in itself without being serialized (although that is possible). Often published as stand-alone books, graphic novels can be a part of series (like the Sandman series by Neil Gaiman) but they are formatted like comic books. On the other hand, memoirs are works or historical accounts or biographies that are written from personal knowledge.
One of the most famous graphic novel memoirs is the Maus duology by Art Spiegelman that shows the horrors of World War II and its after-effects. Spiegelman’s parents were in the concentration camps and both the novels show how that experience continues despite living a free life post-war. Two recent graphic novel memoirs show the immigrant experience in the US but from two different views: The Best We Could Do: An Illustrated Memoir by Thi Bui and Good Talk: A Memoir in Conversations by Mira Jacob.
Other graphic memoirs
Some other graphic novels to include in your TBR are Fun Home: A Family Tragicomic by Alison Bechdel where she shows her family including her coming out as a lesbian and her homosexual father; Can’t We Talk about Something More Pleasant? by Roz Chast which is a heartbreaking portrait of how she copes with the loss of her parents; the Persepolis duology by Marjane Satrapi chronicling Satrapi’s childhood in and return to Iran; and Blankets by Craig Thompson that is about his childhood.