Janet Newberry (born August 6, 1953) is an American former professional tennis player who was active in the 1970s.

She reached the semifinals of the French Open in 1975 and 1977 and the final of the 1973 Wimbledon Championships mixed doubles.

[2] In 1975, she won the British Hardcourt Championship in Bournemouth, reached the semifinals of the French Open, and played for the United States Federation Cup team in doubles, partnering Julie Heldman.

In 1984, Newberry achieved her best Grand Slam women's doubles result, reaching the quarterfinals at Wimbledon partnering Renee Blount, losing to Kathy Jordan and Anne Smith in straight sets.

[8] In 2004, she opened an antique shop in St Petersburg, Florida based on her collection of tennis memorabilia.