- Ann Cahoon
- Caroline Cahoon
- Edna Cahoon
- Edwin Cahoon
- Jimmy Cahoon
- Joyce Cahoon
- Kathleen Cahoon
- Amber Caldwell
- Carolla Calf Robe
- Benjamin Calf Robe
- Harvey Calf Robe
- Natasha Calf Robe
- William Calf Robe
- Crystal Calling Last
- Dorian Calling Last
- Michael Calling Last
- Shaun Calling Last
- Bellina Calling Last-Heavy Runner
- Dorothy Cameron
- Anna Campbell
- Blaine Campbell
- Don Card
- Patrick Carlson
- Vivian Cat Face
- Brent Chief Body
- Joseph Chief Body
- Kalbert Chief Body
- Leonard Christian Chief Calf
- Lloyd Chief Calf
- Lorie Chief Calf
- Ritchie Chief Calf
- Corrine "Trixie" Chief Moon
- Daniel Chief Moon
- Danielle Chief Moon
- Chief Moon, Delvin
- Ethan Chief Moon
- Fritz Chief Moon
- Jordan Chief Moon
- Jordan Chief Moon Sr.
- Rose Mary Chief Moon
- Samuel "Joe" Chief Moon
- Thomas Chief Moon
- Ty Chief Moon
- Hwa Soon Cho
- Arthur Doug Chrismas
- Maryn Christensen
- Sheila Clair
- Cyril Clarke
- Charles Coal
- Shirley Codd
- Hazel (Gorham) Coleman
- Sandra Cook
- Thelma Geraldine Cook
- Francoise Coombs
- Donna Cooper
- Joan Cooper
- John Cooper
- James Cope
- Anthony "Snago" Cotton
- Frank Cotton
- Jennifer Cotton
- Hugh Court
- Alroy Creighton Jr.
- Henry Creighton
- Sharon Creighton
- Sonya Creighton
- Tammie Creighton-Many Fingers
- Maryn Christensen
- Kay Crabtree
- Deon Crazy Bull
- Vivian Crane Chief
- Nicholas Crazy Bull
- Shawna Crazy Bull
- Sonny Crazy Bull
- Quentin Crazy Bull
- Kimberly Cross Child
- Delbert Crow Chief
- Jillian Crow Chief
- Kenneth Crow Chief
- Kirby Crow Chief
- Rose Crow Chief
- Jarred Crow Eagle
- Waylon Crow Spreads His Wings
- Barry Crying Head
- Brandon Crying Head
- Donna crying Head
- Joan Crying Head
- Kathleen Crying Head
- Rommel Crying Head
- Sheldon Crying Head
- Tessie Crying Head
- Josephine Curly Rider
- Marilyn Curly Rider
- Martin Curly Rider Sr.
- Matthew Curly Rider
- Pauline Curly Rider
- Tanya Curly Rider-Bird