Holywatr is a United States metal group that begins as a solo project formed in Los Angeles in 2020 by a member known as Holy. It later becomes a trio. The project builds an audience through support slots, including performances opening for Steve Aoki.

Holywatr releases a second album titled Red Heifer. Its music draws listeners from across grunge, metal and shoegaze, and it is also associated with alternative metal, alternative rock, rock and post-hardcore.