Chor Leoni is a low voice choir based in Vancouver, British Columbia, Canada.

The group was founded as Chor Leoni Men's Choir in 1992 by Order of Canada recipient Diane Loomer, C.M.

[1] While primarily focused on performing classical choral repertoire, Chor Leoni (meaning "choir of lions") sings music of all genres and time periods, and in many different languages.

In recent years, the group has commissioned original choral pieces from Ēriks Ešenvalds, Rodney Sharman and others.

Since 2013, the group has hosted and participated in The Big Roar, a gathering of lower voice singers from Vancouver and around the world, featuring international choirs such as Chanticleer (ensemble) and Iceland’s Karlakórinn Heimir, as well as the organization's professional group, The Leonids, since 2022.