Marcus Porcius Cato can refer to:
- Cato the Elder (consul 195 BC; called "Censorinus"), politician renowned for austerity and author
- Cato the Younger (praetor 54 BC; called "Uticensis"), opponent of Caesar
- Marcus Porcius Cato (consul 118 BC)
- Marcus Porcius Cato (consul 36)
- Marcus Porcius Cato (father of Cato the Younger)
- Marcus Porcius Cato (son of Cato the Younger)
- Marcus Porcius Cato Licinianus (praetor 152 BC)
- Marcus Porcius Cato Salonianus (praetor c. 113 BC)
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