William Robertson Ogg, Jr. (May 10, 1888 – December 25, 1959) was a Scottish-American professional golfer, club maker, and golf course architect. He won the 1921 Shawnee Open, 1923 Maine Open, 1924 New England PGA Championship, and the 1924 Massachusetts Open. He finished tied for 9th place in the 1923 PGA Championship, a career-best result in major championships. Ogg was one of the founding members of the PGA of America, serving as vice president. He was an excellent golf instructor and was the author of the book "Golf as I Know it", published posthumously in 1961.