Alexander George Edward Crossan (born 5 April 1996), better known by his stage name Mura Masa, is a Guernsey-born electronic music producer and songwriter. Crossan is best known for his 2016 song "Lovesick" (featuring ASAP Rocky), which reached number one on the Spotify Viral charts in the United Kingdom and the United States. In 2022, he produced the single "Boy's a Liar" by PinkPantheress, which peaked at number 3 on the US Billboard Hot 100.

Crossan's self-titled debut album (2017) was nominated for Best Dance/Electronic Album and Best Recording Package at the 60th Annual Grammy Awards. His remix of Haim's "Walking Away" won Best Remixed Recording, Non-Classical at the 61st Annual Grammy Awards.