The Senator Ken Maddy Handicap is an American Thoroughbred horse race run annually in mid October at Santa Anita Park in Arcadia, California during the Oak Tree Racing Association meet. A Grade III event, the race is open to fillies and mares age three and older willing to race six and a half furlongs on the downhill turf course. Inaugurated in 1969 as the Autumn Days Handicap for age three and older of either sex, it was the first stakes race and first turf race ever run by the Oak Tree Racing Association. It was first run as an allowance stakes but changed to a Handicap in 1970 and in 1971 was restricted to fillies and mares.

For 1999 the race was renamed to honor the long-serving California State Senator Kenneth L. Maddy for his support of thoroughbred racing. In 2010, Oak Tree's meet moved to Hollywood Park and the race was shortened to six furlongs due to Hollywood Park's course configuration.