- Thomas Cantore
- Thomas Caracciolo
- Thomas Carella
- Thomas Carlotto
- Thomas Carver
- Thomas Casarella
- Thomas Casarella
- Thomas Cestare
- Thomas Chadwick
- Thomas Chairs
- Thomas Charnock
- Thomas Chen
- Thomas Chevrolet Buick Acquired By Key Auto Group
- Thomas Choo
- Thomas Chou
- Thomas Christensen
- Thomas Chung
- Thomas Churbuck
- Thomas Collins
- Thomas Collins, III
- Thomas Collura
- Thomas Conaghan
- Thomas Conlon
- Thomas Conneely
- Thomas Constance
- Thomas Cook Group Acquisitions
- Thomas Cooperrider
- Thomas Cosma
- Thomas Costello
- Thomas Costello Insurance Agency Acquired By Arthur J. Gallagher
- Thomas Cournoyer
- Thomas Crawley
- Thomas Crewe
- Thomas Crews
- Thomas Cronin
- Thomas Croonquist
- Thomas Culhane
- Thomas Curtis
- Thomas Daily Acquired By CoStar Group
- Thomas Dalsgaard
