Appius Annius Trebonius Gallus

Appius Annius Trebonius Gallus, sometimes known as Appius Annius Gallus (Greek: , flourished 2nd century) was a Roman senator and consul.

Gallus was born into the gens Annia and was a member of the venerable family of the Annii Regilli. He was the son of Appius Annius Trebonius Gallus, consul in 108, and an unnamed noblewoman. His paternal grandfather may have been Appius Annius Gallus, one of the suffect consuls in the year 67.

Through his father, Gallus was related to the senator Marcus Annius Verus, a brother-in-law of Emperor Hadrian and father of the Empress Faustina the Elder, wife of Antoninus Pius. Although he was a distinguished senator, not much is known on his life.

Gallus married Atilia Caucidia Tertulla, the daughter of the Senator Marcus Atilius Bradua and Caucidia Tertulla. Tertulla bore him two children: Appius Annius Atilius Bradua, consul in 160