David Charles Horowitz (June 30, 1937 – February 14, 2019) was an American consumer reporter and journalist for KNBC in Los Angeles, whose Emmy-winning TV program Fight Back! would warn viewers about defective products, test advertised claims to see if they were true, and confront corporations about customer complaints. He was on the boards of directors of the National Broadcast Editorial Conference, City of Hope, and the American Cancer Society, and he served on the advisory boards of the FCC and the Los Angeles District Attorney.