The Mars-class combat stores ships were a class of seven auxiliary vessels of the United States Navy.

The ships were designed for underway replenishment, in support of carrier task force groups, carrying miscellaneous stores and munitions.

Cargo capacity of the each ship was approximately 7,000 tons in five holds, with hangar space for two UH-46 helicopters.

Vessels in the class were constructed in mid-1960s, while early units commissioned in the late 1960s served in the Vietnam War.

These ships continued to support naval units during their time in service in US Navy until the mid-1990s.