Smarididae is a family of mites belonging to the order Trombidiformes. These large predatory mites have long oval bodies, distinctively pointed in front. They are usually red and densely hairy with slender legs, sometimes very long. They have either one or two pairs of eyes.

The Cretaceous smaridid Immensmaris chewbaccei had idiosoma of more than 8 mm (0.31 in) in length and was the largest fossil acariform mite and also the largest erythraeoid mite ever recorded.