Yukishige Okubo (大久保 潔重, Ōkubo Yukishige, born March 12, 1966) is a Japanese politician of the Democratic Party of Japan, a fmember of the House of Councillors in the Diet (national legislature).

in 2002, Okubo attended and graduated from the first class of the Ichiro Ozawa Political School, and in the following year he ran for and was elected as an independent for the Nagasaki Prefectural Assembly in the Isahaya City district.

[2] As a result, he ran in and won the 2006 by-election for the Nagasaki Prefectural Assembly,[3] though he would again resign from this position to be the Democratic Party candidate for the Nagasaki district in the 2007 House of Councillors election, managing to defeat the Liberal Democratic candidate Tadatoshi Komine and take the seat.

In 2013, Okubo ran for re-election to the Nagasaki district,but was defeated by newcomer Yūichirō Koga by a wide margin.

[6][7] However, on 15 January 2021, Okuba announced that he would be running that years Mayoral elections for his homecity of Ishihaya as an independent, eventually defeating incumbent mayor Akio Miyamoto (endorsed by the Liberal Democratic Party) and Takeshi Yamamura, a former employee of the Ministry of Land, Infrastructure, Transport and Tourism.