Aaron Starmer (born 1976 in northern California) is an American author of young adult fiction novels, known for The Riverman Trilogy and Spontaneous. As of June 2016, he was working on another novel, entitled Meme. In 2016, it was reported that Awesomeness Films had bought the rights to adapt Spontaneous into a movie of the same name, which was released in 2020. He has also co-authored a book about camping along with Catharine Wells and Timothy Starmer. Also in 2016, Starmer appeared at the annual Texas Book Festival.