Geoffrey William Rickly is an American musician and author, best known as the lead singer and songwriter of rock band Thursday. Rickly is also a member of hardcore punk band United Nations, and the alternative rock group No Devotion with former members of Lostprophets, and is the founder of the record label Collect Records.

Thursday is an American post-hardcore band formed in New Brunswick, New Jersey in 1997. The band consists of Geoff Rickly, Tom Keeley, Steve Pedulla, Tim Payne (bass), and Tucker Rule (drums).