Marcus Tullius Cir, Cicero
- 6491 Marcus Tullius Cir Alberici & Sons Inc
- 6492 Marcus Tullius Cir Bowes, Jason G
- 6502 Marcus Tullius Cir Kleinwaks, Diana L
- 6503 Marcus Tullius Cir Collins, William R
- 6510 Marcus Tullius Cir Casey, Daniel M
- 6515 Marcus Tullius Cir Crystal, Brett M
- 6518 Marcus Tullius Cir Messur, Stuart D
- 6523 Marcus Tullius Cir Saya, Steven J
- 6524 Marcus Tullius Cir Damiano, Michael E