Pensiangan is a federal constituency in Interior Division (Keningau District and Nabawan District), Sabah, Malaysia, that has been represented in the Dewan Rakyat from 1986 to 1995, from 2004 to present. The federal constituency was created in the 1984 redistribution and is mandated to return a single member to the Dewan Rakyat under the first past the post voting system.