Crushed Velvet
- A "doowoppy" barbershop quartet based in Charleston, West Virginia
- http://www.harmonize.com/crushedvelvet/

CHIPS
- A barbershop quartet in the Eau Claire/Chippewa Falls area of west-central Wisconsin.
- http://chipsquartet.com/

Concord eXpress
- A barbershop quartet based in the MetroWest area of Boston, Massachusetts, who sing old and new songs in the traditional barbershop style.
- http://concord-express.org

Chicago News
- 1981 International Quartet Champions from Chicago, Illinois.
- http://arneberg.com/bbshop/chicagonews/

Chicken Chips
- A barbershop quartet from Marietta, Georgia
- http://www.bigchickenchorus.org/quartets/chickenchips/chips.htm

Crosstown Exchange
- Quartet from Walled Lake, Michigan that formed in 1977.
- http://www.harmonize.com/ctx/ctx.htm

Chord Flakes
- A barbershop quartet in Stockholm, Sweden. 
- http://www.harmonize.com/ChordFlakes/

Checkmate
- Background information and performance schedule for this Milwaukee, Wisconsin based quartet
- http://www.execpc.com/~bbsharry/chekmate.html

Colorado Knights
- Quartet from Colorado Springs, Colorado.
- http://home1.gte.net/1grwffyn/html/colorado_knights.html

Cheers!
- Background information, performance schedule, picture gallery and contact information for this Illinois district quartet.
- http://www.harmonize.ws/cheers

Chicago Style
- An a cappella and barbershop style men's quartet based in the Chicago area.
- http://www.barbershopharmony.com