William Jeffrey Austin (born July 5, 1951) is an American former professional tennis player.

[1] Austin, an All-American on four occasions, played tennis for the UCLA Bruins and was a member of their 1970 and 1971 NCAA Championship winning teams.

[2] Austin made the third round at the 1973 Wimbledon Championships, where he lost to Szabolcs Baranyi, despite winning the first two sets.

[3] In 1974, Austin, along with his sister Pam, was a member of the World Team Tennis champion Denver Racquets.

He married fitness instructor Denise Katnich on April 30, 1983.