William Milton Asher (August 8, 1921 – July 16, 2012) was an American television and film producer, film director, and screenwriter. He was one of the most prolific early television directors, producing or directing over two dozen series.

With television in its infancy, he introduced the sitcom Our Miss Brooks, which was adapted from a radio show. He began directing I Love Lucy by 1952. As a result of his early success, Asher was considered an "early wunderkind of TV-land," and was hyperbolically credited in one magazine article with "inventing" the sitcom. In 1964, he began to direct episodes of Bewitched, which starred his wife Elizabeth Montgomery. He produced the series from the fourth season.