Oakland Zoo, Zoo in Oakland, California

The Oakland Zoo is a nonprofit zoo in the Grass Valley neighborhood of Oakland, California, home to more than 850 native and exotic animals. Its entrance gateway carries raised red letters spelling "OAKLAND ZOO", with a sculpted white antelope head on the left end of the beam and a gray elephant head on the right. Below the beam, a dark corrugated-metal roof slopes over a broad opening held up by thick round wooden posts.

Naturalist Henry A. Snow founded the zoo on June 6, 1922, at 19th and Harrison streets downtown, a site now occupied by Snow Park. It moved to Sequoia Park, then Joaquin Miller Park, and in 1939 to Durant Park, which California purchased under state parks chairman Joseph R. Knowland and renamed Joseph Knowland State Arboretum and Park in 1950. Sidney Snow created the East Bay Zoological Society in 1936; it ran the zoo from 1982 until August 2017, when it became the Conservation Society of California.

The zoo's name comes from its founding city, where naturalist Henry A. Snow opened it in 1922; Snow Park now stands on that first site. The nonprofit East Bay Zoological Society ran the zoo for Oakland from 1982 until 2017, when it was renamed the Conservation Society of California. Brass insects set into the concrete walkways of the Valley Children's Zoo were installed as public art.

The entrance sits near the southeastern part of Oakland and can be reached via Golf Links Road. Different opening hours apply on weekdays and weekends, with advance online reservation required for all visits.

The zoo's 2012 veterinary hospital is LEED-certified and covers 17,000 square feet, described as the largest wild animal veterinary facility in Northern California. The 2018 California Trail, reached by aerial gondola, cost $70 million of an $81 million development and displays bears, wolves, mountain lions and bison.