George Allan Hancock (July 26, 1875 – May 31, 1965) was the owner of the Rancho La Brea Oil Company.

Hancock received his early education in the primary schools and at Brewer's Military Academy in San Mateo, California, which he attended during 1888 and 1889.

In 1900, Ida Hancock granted a 20-year lease to the Salt Lake Oil Company for 1,000 acres (4.0 km2) of Rancho La Brea.

In 1907, after spending three years studying the industry, he urged his mother to allow him enough capital to sink a well on a portion of the property that had not already been leased to oil operators.

With the assistance of William Orcutt, Hancock drilled 71 wells near the family's ranch house.

[12] The vessel was used for private oceanographic research and exploration, making trips to the Galápagos Islands, before being donated to the University of Southern California and later purchased for war use by the Navy on December 15, 1941, and being commissioned as the USS Chalcedony.

[17] The Allan Hancock College in Santa Maria, California, is named after him as well as the city's airport.