Kultuk (Russian: Култук) is the name of
- a southwestern wind in the Lake Baikal valley, see ru:Култук (ветер)
- two inhabited localities in Irkutsk Oblast, Russia:
- Kultuk, Slyudyansky District, Irkutsk Oblast, an urban locality (a work settlement) in Slyudyansky District
- Kultuk, Usolsky District, Irkutsk Oblast, a rural locality (a village) in Usolsky District