John Mark Hall is an American musician. He is the lead vocalist for the Georgia-based contemporary Christian music group Casting Crowns, a seven-member group composed of worship leaders. He is also youth pastor at Eagle's Landing First Baptist Church in McDonough.

Casting Crowns is a contemporary Christian and Christian rock band from Daytona Beach, Florida. The band was formed in 1999 by lead vocalist Mark Hall. The band later moved to Stockbridge, Georgia, and more members joined. Some members of the band currently work as ministers for Eagle's Landing First Baptist Church in McDonough, Georgia. The band has won a Grammy and a Dove Award.