Mine Countermeasures Helicopter Squadron 111 (第111航空隊, dai-111-koukuutai) is a squadron of the Japan Maritime Self-Defense Force based at Marine Corps Air Station Iwakuni in Yamaguchi Prefecture, Japan.

[1][2] As of 2016 there were seven MCH-101 aircraft in service with the squadron and plans for a total of 11.

There were also discussions for the purchase for over a dozen additional aircraft.

[3] Two retired MH-53E helicopters of the squadron were sold to the US in 2015 for their components.

The US was running short of parts for its own fleet of the aging aircraft.