William Landry Aronson (born 1981) is an American composer and writer for musical theater, whose work includes the scores for Pete the Cat, Mother, Me & the Monsters, and My Scary Girl.

In addition to his theatrical work, Aronson has composed and produced over 200 tracks for the ESL children's book/DVD series, English Egg.

[2] After graduation from Harvard, Aronson studied Music Theory as a Fulbright Scholar at Universität der Künste in Berlin.

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.

[7] The New York Musical Theater Festival (NYMF) presented the Korean version of My Scary Girl October 1–4, 2009.

[8] 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.