Yohanan Plesner (Hebrew: יוחנן פלסנר; born January 17, 1972) is an Israeli politician who served as a member of the Knesset for Kadima between 2007 and 2013.

Plesner grew up in Jerusalem, and during his national service in the Israel Defense Forces from 1989 to 1994, he served as an officer with the Sayeret Matkal commando unit.

[2] He went on to study at the prestigious Amirim Program of Excellence at the Hebrew University of Jerusalem, where he gained a BA with distinction in economics.

Plesner then spent several years in the business world, first as a consultant to major financial corporations in Britain, and then as co-founder and manager of an international software company.

During his time in the legislature, Plesner spoke out on issues ranging from national security and electoral reform to preservation of the environment and excellence in education.