Cameron Erskine Thom (June 20, 1825 – February 2, 1915) was a lawyer, a legislator, a Confederate officer in the Civil War, and the 16th mayor of Los Angeles from 1882 to 1884.

He gathered gold on the South Fork of the American River, in Amador County, then settled in Sacramento to open a law office.

He had four children: Cameron DeHart, Charles Catesby, Belle (Mrs. Arthur Collins of London, England) and Erskine Pembroke.

[3] A funeral service in his home at 2070 West Adams Street attracted a "company of several hundred persons," including representatives of the Society of Colonial Wars, of which he was a founder and charter member.

[2] The 1871 land case known as "The Great Partition" divided Rancho San Rafael into 31 sections given to 28 people, including 724 acres (2.93 km2) for Thom.