Karambunai is a state constituency in Sabah, Malaysia that has been represented in the Sabah State Legislative Assembly since 2004.
The state constituency was created in the 2003 redistribution and is mandated to return a single member to the Sabah State Legislative Assembly under the first past the post voting system.
As of 2020, Karambunai has a population of 164,076 people.
According to the gazette issued on 31 October 2022, the Karambunai constituency has a total of 7 polling districts.