IRIS Younes or Yunes[2] (Persian: زیردریایی یونس) is the third Kilo-class attack submarine of Islamic Republic of Iran Navy serving in the Southern Fleet.

[1] It was reportedly worth $750 million for two submarines (Taregh and Nooh), with an option for the third (Younes).

[1] Jane's Defence Weekly reported on 8 October 1994 that Iran was considering cancellation of Younes, due what was later revealed to be continued problems with batteries of the first two received submarines of the same class.

[7] An Iranian naval official said the submarine tested upgraded systems during the mission, identifying and intercepting surface vessels and subsurface float of different countries within area.

[9] The submarine arrived at Colombo, Sri Lanka on 22 December[10] and was visited by Admiral Jayanath Colombage before it left the port.