Ingebrigt Håker Flaten (born 1971 in Oppdal Municipality, Norway) is a Norwegian bass player active in the jazz and free jazz genres.

He has released one solo album, and two albums with his quintet, Ingebrigt Håker Flaten Quintet.

Flaten is also active in a long list of other ensembles, such as Atomic, The Thing, Scorch Trio and Free Fall.

See also The Music of Norman Howard, an album by School Days and The Thing.