ARA Salta (S-31) is a Type 209 diesel-electric attack submarine in service with the Argentine Navy.

[4] Salta is one of two Type 209 acquired by the Armada Argentina; the other is ARA San Luis (S-32), which actively participated in the Falklands/Malvinas conflict in 1982 and was retired from service in 1997.

[5] ARA Salta (S-31), has participated during the 1978 crisis, together with other Argentine surface ships and submarines.

During the Falklands War (1982), the S-31 was not available because of several mechanic problems; mainly the torpedo firing system; a successful trial was performed on 15 June, when the conflict was over.

Since then, the S-31 has participated in several national and international exercises, and also spent many years patrolling the Argentine sea.