Diane Barnard (born 1964) is an English professional golfer, broadcaster and golf executive, who played on the Ladies European Tour (LET) and LPGA Tour.

She played on the LET between 1985 and 2006, where she won the 1990 BMW Ladies Classic and was runner-up at the 1991 Women's British Open.

Barnard won her maiden title at the 1990 BMW Ladies Classic in Düsseldorf, Germany, a stroke ahead of Australian Corinne Dibnah.

In 1991, she was runner-up at the Bloor Homes Eastleigh Classic behind Dale Reid, and tied second with Helen Alfredsson in the Women's British Open at Woburn Golf and Country Club, three strokes behind Penny Grice-Whittaker.

Barnard also functioned as a broadcaster and commentator for women's golf on Sky Sports.