This is a list of spouses of prime ministers of Japan.
The media often refers to the spouse of a Japanese prime minister as the "First Lady of Japan" or "First Gentleman of Japan." However, as the prime minister is not head of state but head of government, this differs considerably from its equivalent in the United States (the spouse of the head of state is the Empress of Japan).
The current prime minister, Sanae Takaichi, has been remarried to Taku Yamamoto since 2021; the couple were first married in 2004 and divorced in 2017.
The role of the prime minister's consort is not an official position, and so they are not given a salary or official duties.