William Landry Aronson (born 1981, New Haven, Connecticut) is a contemporary American composer and writer for musical theater.
Aronson holds a B.A. in music from Harvard University. As an undergraduate, Aronson was the composer of Hasty Pudding Theatricals' 154th production, Snow Place Like Home, and co-author/lyricist of its 155th production, It's a Wonderful Afterlife.
After graduation from Harvard, Aronson studied Music Theory as a Fulbright Scholar at Universität der Künste in Berlin.
Aronson holds an M.F.A. from the Graduate Musical Theatre Writing Program of the Tisch School of the Arts at New York University. While studying at NYU, he received the ASCAP Frederick Loewe Scholarship and a 2006 Baryshnikov Fellowship. In 2007 he was named by the Dramatists Guild of America as one of "50 to Watch".
Aronson wrote the score for a musical version of the Korean movie My Scary Girl (book and lyrics by Kyoung-ae Kang), which ran in Seoul, South Korea. The show won Best Original Musical (small theater category) at the 2009 Korea Musical Awards. An English-language version of the show, with book co-written by Mark St. Germain and additional lyrics by William Finn, ran at Barrington Stage Company's Stage II, July 10–26, 2008. The New York Musical Theater Festival (NYMF) presented the Korean version of My Scary Girl October 1–4, 2009. My Scary Girl was named the Outstanding New Musical at NYMF for 2009.
A reading of Aronson's musical The Trouble with Doug, co-written with Daniel Maté, was directed by Victoria Clark at the NAMT theater festival in 2010.