Aleksandr Nedovyesov (born 15 February 1987), formerly known as Oleksandr Nedovyesov, is a professional tennis player of Kazakhstan. He represented Ukraine until December 2013. He competes mainly on the ATP Challenger Tour, both in singles and doubles. He reached his highest ATP singles ranking of World No. 72 in April 2014 and his highest ATP doubles ranking of No. 115 in February 2014.
Aleksandr made his first appearance in the main draw of a Major at the Australian Open, where he lost to Tomáš Berdych in straight sets. At the French Open, he recorded his first victory at a Grand Slam event with victory over Somdev Devvarman, he again met Berdych in the second round, this time winning a set before losing in four.