Nissan Slomiansky (Hebrew: ניסן סלומיאנסקי; born 10 January 1946) is an Israeli politician.

Slomiansky was born in Ramat Gan during the Mandate era in the family, who migrated from the Second Polish Republic.

He was educated at Bnei Akiva's yeshiva in Nechalim, and completed academic studies in physics and mathematics at Bar-Ilan University.

During this period, he set a record for being the only member of Knesset to be present for 100% of the meetings and votes; likewise, he was known for being an extremely prolific legislator.

Following allegations of sexual misconduct,[1] in December 2016, Slomiansky suspended himself from the chairmanship of the Knesset's Constitution, Law, and Justice Committee.