David Joel Horowitz (January 10, 1939 – April 29, 2025) was an American conservative writer and activist. He was a founder and president of the David Horowitz Freedom Center (DHFC); editor of the Center's website FrontPage Magazine; and director of Discover the Networks, a website that tracks individuals and groups on the political left. Horowitz also founded the organization Students for Academic Freedom.

David Charles Horowitz (June 30, 1937 – February 14, 2019) was an American consumer reporter and journalist for KNBC in Los Angeles, whose television program Fight Back! would warn viewers about defective products, test advertised claims to see if they were true, and confront corporations about customer complaints.[2] He was on the boards of directors of the National Broadcast Editorial Conference, City of Hope, and the American Cancer Society,[3] and he served on the advisory boards of the FCC and the Los Angeles District Attorney.