Yaak may refer to:
People: Yaak Karsunke (1934–2025), German author and actor Yaak Uudmae (born 1954), Estonian triple jumper and long jumper, 1980 Olympic gold medallist
Locations: Yaak, Montana, unincorporated town in Lincoln County, Montana, United States Yaak River, tributary of the Kootenay River in Montana, USA and British Columbia, Canada Yaak Air Force Station, closed United States Air Force General Surveillance Radar station
See also Yaaks Yaaku (disambiguation) Yak