Denebola brachycephala
Isla cedros whales by avancna-d4v9hwr
A restoration of Denebola brachycephala along with Parapontoporia pacifica (top), Piscolithax tedfordi (below Parapontoporia), and the Praekogia cedrosensis (bottom)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Infraorder: Cetacea
Family: Monodontidae
Genus: Denebola
Barnes, 1984
Species: D. brachycephala
Binomial name
Denebola brachycephala
Barnes, 1984

Denebola brachycephala is an extinct genus of whale belonging to the family Monodontidae. It is the earliest known ancestor of the beluga (Delphinapterus leucas), and dates from the Upper Miocene period. A fossil was found in the Baja California peninsula, indicating that the family once existed in warmer waters.