Kansa may refer to:
- Kaw people or Kansa, a Native American tribe in Oklahoma and parts of Kansas
- Kansa language, a Siouan language of the Dhegihan group once spoken by the Kaw people
- Kansa or Kamsa, a character in Hindu mythology, the ruler of Mathura and uncle of Krishna
- Tapani Kansa (born 1949), a Finnish singer
- Kansa, Bangladesh, a village in Jhalakati District
- Kansa method, a method for the solution of partial differential equations