Калифорнияның Сан-Бернардино ұлттық орманы

National forest in California, United States

The San Bernardino National Forest is a United States National Forest in Southern California encompassing of which are federal. San Gorgonio, Cucamonga, San Jacinto, South Fork, Santa Rosa, Cahuilla Mountain and Bighorn Mountain. Forest headquarters are located in the city of San Bernardino. There are district offices in Lytle Creek, Idyllwild, and Fawnskin. This site was the filming location for Daniel Boone in 1936; part of the 1969 musical film Paint Your Wagon was shot here. Free camping is available at 47 different 'Yellow Post' campsites located throughout the forest.

The San Bernardino National Forest has its own fire stations and engine companies.

As of 2001, eight Air Tactical Group Supervisors (ATGSs) work out of the Forest Supervisor's Office in San Bernardino.

There are many different species of trees, many coniferous, that grow in the mountains. Pines, such as ponderosa pine, Jeffrey pine, sugar pine, Coulter pine, lodgepole pine, single leaf pinyon, and knobcone pine all thrive here. Other coniferous trees, such as white fir, bigcone Douglas fir (Pseudotsuga macrocarpa), incense cedar, and western juniper also thrive here. Canyon live oak, California black oak, and Pacific dogwood are other trees that also grow here. The forest contains an estimated of old growth. The most common types are Sierra Nevada mixed conifer forests, white fir (Abies concolor) forests, Jeffrey pine (Pinus jeffreyi) forests, and lodgepole pine (Pinus contorta) forests.

Rock climbing is popular in some areas of the San Bernardino National Forest, most notably at Tahquitz Rock near Idyllwild.