| Named By: | A. T. Boersma & N. D. Pyenson in 2015 |
| Time Period: | Langhian |
| Location: | Japan - Kadonosawa Formation, Kunnui Formation, Yuda Formation. USA, California - Monterey Formation |
| Size: | Unavailable |
| Diet: | Carnivore |
| Fossil(s): | Partial skulls |
| Classification: | | Chordata | Mammalia | Cetacea | Physeteroidea | |
| Also known as: | | Ontocetus oxymycterus | Scaldicetus oxymycterus | |
Albicetus is a genus of stem-sperm whales that lived around 15 million years ago, found in Santa Barbara, California in 1909. It was originally wrongly categorized for decades as belonging to a group of extinct walruses. It was named Albicetus, meaning "white whale," a reference to the leviathan in Herman Melville's classic 1851 novel Moby Dick, centering on Captain Ahab's obsession with a huge white sperm whale.