Yamaltu/Deba is a Local Government Area of Gombe State, Nigeria. Its headquarters is in the town of Deba (or Deba Habe), to the southeast of the state capital Gombe. It is inhabited by mainly Tera and Fulani people.

The southern part of Lake Dadin Kowa lies within the area.

It has an area of 1,981 km2 and a population of 255,248 at the 2006 census.

The postal code of the area is 761.