- William Campbell
- William Campbell
- William Cannon
- William Capps
- William Carr IV
- William Cartwright
- William Case
- William Castner
- William Cayce
- William Cernius
- William Chan
- William Chandler III
- William Chang Yu
- William Charles Construction Group Acquired By Infrastructure & Energy Alternatives
- William Charnley
- William Chiles
- William Ching
- William Chisholm
- William Cho
- William Choe
- William Choi
- William Christ
- William Chua
- William Chudd
- William Chung
- William Clark
- William Clark Lowes
- William Clydesdale
- William Coggshall
- William Colaianni
- William Collins
- William Connell
- William Connell
- William Connolly
- William Connors
- William Conti
- William Conway, Jr.
- William Cooke
- William Cooper
- William Cooper
