Cohors secunda Gallorum Dacica equitata ("2nd part-mounted Cohort of Gauls in Dacia") was a Roman auxiliary regiment which contained both infantry and cavalry contingents. It was probably originally raised in Gallia Lugdunensis (northern France) during the rule of the founder-emperor, Augustus (r. 30 BC - AD 14). The regiment is first attested in Dacia (Romania) in 109, shortly after the end of the Dacian Wars (101-106) and thus probably participated in those wars. Its last datable attestation is from 179, still in Dacia Superior. Its later fate is unknown.