Rena Matsui (松井 玲奈 Matsui Rena, born July 27, 1991 in Hyōgo Prefecture) is a former member of the Japanese idol girl group SKE48. She graduated from the group on August 31, 2015. She also had a concurrent position as a member of Nogizaka46 from February 24, 2014 to March 26, 2015.