Kimberly Po (born October 20, 1971) is a former professional tennis player from the United States.

In her career, she won the mixed doubles title at Wimbledon in 2000, partnering Donald Johnson.

Po won six top-level doubles titles.

Her best singles performance at a Grand Slam event came at the 1997 Australian Open when she reached the quarterfinals before being knocked out by Amanda Coetzer.

Po married Oliver Messerli in 2001, and was known thereafter as Kimberly Po-Messerli.