Arina Ivanovna Rodionova (; born 15 December 1989) is a Russian-born Australian tennis player. Rodionova has won nine singles and 42 doubles titles on the ITF Women's Circuit. In 2007, she won the Australian Open girls' doubles title, partnering Evgeniya Rodina. On 23 October 2017, she reached a career-high singles ranking of world No. 116. On 27 July 2015, she peaked at No. 41 in the doubles rankings. Elder sister Anastasia is also a tennis professional, and the two sisters have intermittently contested doubles tournaments together with modest success. Their most notable achievement as a team came at the 2010 Malaysian Open, in which they reached the final before losing to Chan Yung-jan and Zheng Jie in a super tie-break. Career Rodionova made her debut as a professional in 2004 at an ITF Women's Circuit event in Protvino, Russia. In 2005, she won a title in Minsk, followed by another win in Moscow the following year. In 2008, she finished as a runner-up in an ITF event in Istanbul. In 2009, Rodionova won two ITF titles in singles and eight in doubles. In 2010, Rodionova defeated Jarmila Groth in the final of a $25k tournament in Burnie. In doubles, she advanced to the final of the WTA Tour-level Malaysian Open with her sister Anastasia. Although they defeated No. 1 seeds Alisa Kleybanova and Yan Zi along the way, the sisters lost the final match to Chan Yung-jan and Zheng Jie in close three sets. At the 2011 Australian Open, Rodionova equalled her career-best showing at a Grand Slam tournament by qualifying for the main draw. She lost in the first round to fellow qualifier Anne Keothavong, 5–7, 4–6. She then won a $50k event in May in Prague, partnering Darya Kustova. She qualified for the Birmingham Classic, and won her first-round match against Virginie Razzano. She then notched the biggest win of her career by defeating No. 1 seed and world No. 16, Kaia Kanepi, in the second round. She lost to the 14th seed Magdaléna Rybáriková in the third round. At Wimbledon, Rodionova barely missed out on qualifying for the main draw by losing to Kristýna Plíšková, in three sets. She achieved very modest results through much of the rest of the year, losing in the first or second round of most tournaments she entered. In 2012, Rodionova lost in the qualifying rounds of the Sydney International and the