Tus may refer to:
- Tus, Iran, an ancient city in the Iranian province of Razavi Khorasan
- Tus-e Olya, a village in Razavi Khorasan Province, Iran
- Tus-e Sofla, a village in Razavi Khorasan Province, Iran
- Tus Rural District, in Razavi Khorasan Province, Iran
- Tus protein, involved in termination of prokaryotic DNA replication
- Tucson International Airport