Eaton Saddle Trailhead

Eaton Canyon is a major canyon beginning at the Eaton Saddle near Mount Markham and San Gabriel Peak in the San Gabriel Mountains in the Angeles National Forest, United States. Its drainage flows into the Rio Hondo river and then into the Los Angeles River. It is named after Judge Benjamin S. Eaton, who lived in the Fair Oaks Ranch House in 1865 not far from Eaton Creek.

The most well-known portion of the canyon is the Eaton Canyon Nature Center in Pasadena, California. The trailhead of the Mount Wilson Toll Road is in the canyon.