Standing NATO Mine Countermeasures Group 1 (SNMCMG1) is a North Atlantic Treaty Organisation (NATO) standing mine countermeasures immediate reaction force.

Its role is to provide NATO with an immediate operational response capability.

[1] From its activation at Ostend on 11 May 1973, the unit was initially called Standing Naval Force Channel (STANAVFORCHAN).

The combined force comprised 11 minehunters and minesweepers and a support ship.

In total, 93 pieces of ordnance were located and cleared in the nine areas which encompassed 1,041 square nautical miles (3,570 km2; 1,379 sq mi).