Bommer Canyon, Natural canyon in Irvine, United States

Bommer Canyon is an open space preserve in southern Irvine, California, part of the Irvine Ranch. Its trails pass groves of oak and sycamore trees and rough rock outcrops. About 15 acres form the Cattle Camp, rented for private events, with a covered stage, barbecue pit, chuck wagon, sand volleyball court and horseshoe pits.

In 1837 José Antonio Andrés Sepúlveda established Rancho San Joaquin, which included the canyon. Flint, Bixby & Co. bought much of the rancho in 1864, and James Irvine became sole owner of Irvine Ranch in 1867. From the late 1800s to the 1970s the Bommer Canyon Cattle Camp was the center of the Irvine Company's cattle operations. The city bought the land in 1981–82 with 1974 California Bond Act grants.

The name Bommer is not tied to a farming family in the sources; the canyon's identity comes from the Bommer Canyon Cattle Camp, the Irvine Company's cattle operations center from the late 1800s to the 1970s. The camp area is now rented for campouts, company picnics and family reunions, and includes a chuck wagon used for food service.

Some sections of the canyon require advance registration or permits, so checking ahead before arriving is a good idea. Early morning visits tend to be cooler and less crowded, which makes the trails easier to enjoy.

The 15-acre Cattle Camp takes its name from the cattle operations that used the canyon as a hub from the late 1800s until the Irvine Company ended its cattle business in the late 1970s. The city now rents the site for campouts and company picnics; it has a covered stage, a barbecue pit, a large chuck wagon for food service, a sand volleyball court, horseshoe pits and campfire areas.