Titus (; 30 December 39 AD – 13 September 81 AD) was Roman Emperor from 79 to 81. A member of the Flavian dynasty, Titus succeeded his father Vespasian upon his death, thus becoming the first Roman Emperor to come to the throne after his own biological father.

Titus may refer to:

• Titus (praenomen), of unknown etymology
• Emperor Titus (AD 39–81), Titus Flavius Vespasianus
  • His father, Emperor Vespasian (AD 9–79), also named Titus Flavius Vespasianus
• Emperor Domitian (AD 51–96), Titus Flavius Domitianus
• The historian Titus Livius (59 BC–AD 17), usually referred to as Livy in English
• Titus Pomponius Atticus (110/109 BC–35/32 BC), littérateur/philosopher and friend of Marcus Tullius Cicero
• Titus Quinctius Flamininus (c. 229 BC–174 BC), politician and general instrumental in the Roman conquest of Greece
• Titus Labienus (c. 100 BC–45 BC), Roman general
• Titus Tatius (died 748 BC), according to tradition the Sabine king who attacked Rome but reconciled with the Roman king Romulus
• Titus (usurper), one of the Thirty Tyrants in the Historia Augusta
• Titus Pullo, centurion in Caesar's legions
• Titus Junius Brutus (died c. 509 BC), member of the Tarquinian conspiracy
• Titus Tarquinius, son of the last king of Rome