Sumire Uesaka (上坂すみれ, Uesaka Sumire, born December 19, 1991) is a Japanese voice actress and singer affiliated with Space Craft Entertainment. She won the Best Rookie Actress at the 10th Seiyu Awards. She made her singing debut in April 2013 under King Records.
Uesaka became a regular on the web radio program Web radio @ Dengeki-Bunko in September 2009. She entered the Faculty of Foreign Studies at Sophia University in April 2010. She majored in the Russian language and announced that she had graduated on March 27, 2014. Uesaka joined Space Craft Entertainment in April 2011. Since October 2011, she has been the radio personality on the web radio program A&G NEXT GENERATION Lady Go!!. Uesaka starred in a leading role for the anime series Papa no Iu Koto wo Kikinasai!.
She is known as a Russophile who has great interest in Russian culture as well as the former Soviet Union. Since hearing the State Anthem of the USSR in her first year of high school, she immersed herself in Russian studies. She finally visited the country in November 2013, giving a concert at the Moscow Japanese pop culture festival J-Fest.