日本オリンピック委員会
Since retiring, Mikako Kotani has opened a synchronized swimming school and served on the JOC (Japanese Olympic Committee), IOC Athletes' Commission, and Association of National Olympic Committees. In 1997, she introduced the resolution to promote Olympic truce to the United Nations General Assembly. In 2013, she was chosen to present the proposed venue layout for Tokyo's successful bid to host the 2020 Summer Olympics.