Ryoko Takemura (born 2 June 1976) is a Japanese former professional tennis player.
She competed mostly on the ITF circuit, winning three singles and nine doubles titles.
In 1999 she won a Universiade bronze medal for Japan in the women's doubles with Seiko Okamoto.
At the 2004 Australian Open, Takemura and Seiko Okamoto were given a wildcard into the doubles main draw, where they were beaten in the opening round by second seeds Martina Navratilova and Lisa Raymond.In 2005 she teamed up with Tomoko Yonemura to win three $25,000 ITF tournaments and reached her best doubles ranking of 165 in the world.