Akiko Suwanai (諏訪内晶子, Suwanai Akiko, born February 7, 1972) is a Japanese classical violinist.

At the age of 18, she became the youngest winner of the International Tchaikovsky Competition in 1990. In addition, she was awarded second prize in the Paganini Competition in 1988 and Queen Elisabeth Competition in 1989 and is a laureate of the Music Competition of Japan.

She has studied with Toshiya Eto at the Toho Gakuen School of Music, with Dorothy DeLay and Cho-Liang Lin at the Juilliard School of Music while at Columbia University, and with Uwe-Martin Haiberg at the Universität der Künste Berlin.

Until 2019 she played the 1714 Dolphin Stradivarius, on loan from the Nippon Music Foundation. After it was returned she received the "Charles Reade" Guarneri del Gesù on loan from Japanese collector Ryuji Ueno.