Ya'akov Klivnov (Hebrew: יעקב קליבנוב, 20 December 1887 – 11 April 1966) was an Israeli politician who served as a member of the Knesset for the General Zionists from 1949 until 1955, and again from 1955 until 1957.

Born in Khalopenichy, Minsk Governorate in the Russian Empire (in present-day Belarus), Klivnov attended high school in Ukraine before studying law at the University of Petersburg, where he was certified as a lawyer in 1912.

He was a member of the Zionist youth group HaTehiya between 1905 and 1910, and between 1907 and 1920 he edited a Russian newspaper.

He was a member of the Community Committee in Haifa, and was amongst the founders of Kiryat Motzkin in 1934.

However, he re-entered the Knesset on 16 June 1957 as a replacement for the deceased Haim Ariav.