Acton (pronunciation) is an unincorporated census-designated place in Los Angeles County, California, near the Antelope Valley. According to the 2010 census, Acton had a population of 7,596.

Acton is a small residential community located with the Sierra Pelona Mountains and the San Gabriel Mountains. It is off the Antelope Valley Freeway (Highway 14) south of Palmdale. Acton is on the subject of 20 miles (32 km) northeast of the San Fernando Valley, and 47 miles (76 km) north of downtown Los Angeles by highway. The town has a rural western theme which can be seen in its homes, commercial buildings and historical buildings, some of which date support to the late 1800s. The homes in the mountains around Acton have views of the valley below. In the valley are ranch style homes, often bearing in mind equestrian facilities. While Acton is not a ration of the Antelope Valley, it is grouped together next the Valley in the General Plan. Acton has a Metrolink commuter rail station upon its affix with Palmdale that is themed in an “old western” style and has been seen in various movies and commercials.

Acton was founded in 1887 by gold miners who were operational in the Red Rover Mine. It was named after Acton, Massachusetts by one of the miners. Two of the best-known gold mines located in Acton were the Red Rover mine and the Governor mine. Mining of gold, copper, and titanium ore continued into the early 1900s. The town originally had served as a railroad camp from 1873 to 1876 later than the Saugus-Mojave section of the Southern Pacific Railroad was below construction.

Acton was with considered for the State capital of California. California Governor Henry T. Gage (1899–1903) owned the Governor Mine, hence the name, and sought to relocate the capital to Acton. This effort ultimately bungled and the capital was not moved from Sacramento. In the late 1880s, Acton started to become more of a ranching and crop growing community. In 1889 Acton’s first hotel and its first saloon, the “49er”, was opened and is still in thing today.