Jan Lynn Stephenson (born 22 December 1951) is an Australian professional golfer. She became a member of the LPGA Tour in 1974 and won three major championships and 16 LPGA Tour events. She has 41 worldwide victories including (10) LPGA Legends Tour wins and 8 worldwide major championships. She has 15 holes-in-one with (9) in competition.
Stephenson was born in Sydney. While a teenager, she won five consecutive New South Wales Schoolgirl Championships in Australia, beginning in 1964, and followed that up with three straight wins in the New South Wales Junior Championship. She turned professional in 1973 and won the Wills Australian Ladies Open that year. Stephenson joined the LPGA Tour in 1974 and was named LPGA Rookie of the Year.
Stephenson's first LPGA victory was the 1976 Sarah Coventry Naples Classic. Her most productive period was the early 1980s, when she won all of her majors in consecutive years: 1981 Peter Jackson Classic, the 1982 LPGA Championship and the 1983 U.S. Women's Open.