Mikasa (三笠市, Mikasa-shi) is a city located in Sorachi Subprefecture, Hokkaido, Japan.

Mikasa is one of the birthplaces of the mining and railroad industries in Hokkaido, and the Hokkai Bon song was invented there.

Though in the past it flourished due to its natural abundance of coal, the mines have largely closed down and this has caused the population of the city to fall rapidly.

Quite a few fossil specimens have also been collected there, particularly ammonites and the prehistoric marine reptile Yezosaurus mikasaensis, both of which can be viewed at the city's natural history museum.

Notable local products include watermelon, musk melon, cucumber, northern plum, and wine.