Miss Grand Japan 2015 was the second edition of the Miss Grand Japan beauty pageant. The final competition took place on August 24, 2015, at the Happo-en in Tokyo, Japan. The event was organized to select the national representative for the Miss Grand International 2015 pageant held in Bangkok, Thailand.
The competition was won by Ayaka Tanaka, a nurse from Saitama Prefecture. As the winner, Tanaka succeeded the previous titleholder, Mieko Takeuchi (Miss Grand Japan 2014). Following her crowning, Tanaka competed in the international circuit, where she placed among the Top 10 finalists.
The pageant operated under the global theme of "Stop the War and Violence," which is the core mission of the Miss Grand International organization. During the national selection process, contestants were evaluated based on their physical appearance, communication skills, and their ability to serve as ambassadors for the organization's peace-focused initiatives. The 2015 edition featured several finalists who participated in segments including swimwear, evening gown, and a public speaking round regarding social issues.
