Dave Thomas (born 16 August 1934) is a Welsh professional golfer.

Dave Thomas was one of Britain’s foremost golfers of the 1950s and 1960s, winning over a dozen tournaments in Britain and Europe, and twice finishing second in Open Championship. In 1958, he tied with Peter Thomson at Lytham before narrowly losing the playoff, and in 1966, finished just one shot behind Jack Nicklaus. He represented Great Britain in the Ryder Cup in 1959, 1963, 1965 and 1967, accumulating a 3-10-5 win-loss-half record, but was only once beaten in five singles matches. He was renowned for his long, straight, driving, once hitting a drive at Hoylake onto the green at the 420-yard second hole.

After retiring he set up a golf course design business. His dozens of original designs include the Brabazon, Derby and PGA National courses at Ryder Cup venue The Belfry, and his redesigns include the Open Championship venue Turnberry.

Professional wins
1955 Belgian Open
1958 Dutch Open
1959 French Open
1961 Esso Golden Tournament (tie with Peter Thomson)
1962 Esso Golden Tournament
1963 News of the World Match Play, Olgiata Trophy (Rome)
1965 Silentnight Tournament
1966 Esso Golden Tournament, Swallow-Penfold Tournament, Jeyes Pro-Am Tournament