Yukiko Ueno (?? ???, Ueno Yukiko, born July 22, 1982 in Fukuoka City) is a Japanese softball pitcher for Renesas Takasaki and the Japanese national team, who holds a bronze and a gold medal from 2004 and 2008 Summer Olympics, respectively.
She became the first pitcher ever to produce a perfect game at the Olympics, against China in Athens.
With fastball which tops out at 128 km/h (80 mph), she is widely recognized as the fastest pitcher in women's softball.