The Mount Baldy Ski Lifts, or "Baldy", is a ski resort in the western United States in southern California. Forty-five miles (72 km) east-northeast of Los Angeles in San Bernardino County, it is located on Mount San Antonio—Mount Baldy in the San Gabriel Mountains.

Mount San Antonio, commonly referred to as Mount Baldy or Old Baldy, is a 10,064 ft (3,068 m) summit in the San Gabriel Mountains on the border of Los Angeles and San Bernardino counties of California. Lying within the San Gabriel Mountains National Monument and Angeles National Forest, it is the high point of the range, the County of Los Angeles, and the Los Angeles metropolitan area.