Yohanan Cohen (Hebrew: יוחנן כהן, 31 December 1917– May 20, 2013)[1] was an Israeli politician and diplomat.

Born in Łódź (then part of the Russian Empire, though occupied by Germany at the time), Cohen attended high school in Poland before and was active in the HaNoar Hatzioni group, before immigrating to Mandatory Palestine in 1937.

Following Israeli independence, Cohen became a member of the Histadrut's organising committee, and was also a director of the secretariat of the World Zionist Youth group between 1952 and 1954.

Whilst he was never elected to the Knesset, he served for two years between 1957 and 1959 as a replacement for Yeshayahu Forder.

He began working in the Ministry of Foreign Affairs in 1960, initially in the information department.