Clinton Gilbert Abbott (1881 – 1946) was an American ornithologist, naturalist, and Director of the San Diego Natural History Museum from 1922 to 1946. Abbott supervised the construction of the Museum's current building in Balboa Park, expanded research field trips and expeditions, and participated in important conservation efforts in southern California and the Baja California region. He was instrumental in the preservation of the southern California desert area that became Anza-Borrego Desert State Park.