|15 November 1900|
|Bender, Russian Empire|
|6 January 1983(aged 82)|
|Faction represented in Knesset|
He became one of the leaders of Poale Zion Left, and was also involved in other Marxist groups in Mandate Palestine. In 1945 he joined the Hashomer Hatzair Workers Party, which merged with Ahdut HaAvoda to form Mapam in 1948. Kushnir became a member of its central committee, and was a member of the secretariat of its Haifa branch. Between 1950 and 1955 he was a member of Haifa city council, and also served as chairman of the city's branch of the Lawyers Union.
He was on the Mapam list for the 1959 Knesset elections, but failed to win a seat. However, he entered the Knesset on 10 July 1960 as a replacement for Haim Yehuda. Although he lost his seat in the 1961 elections, he returned to the Knesset on 24 October 1962 as a replacement for the deceased Hanan Rubin. He lost his seat again in the 1965 elections.
Kushnir died in 1983 at the age of 82.