Kestenbaum is a German surname. Notable people with the surname include:
David Kestenbaum, American radio correspondent
Jonathan Kestenbaum, Baron Kestenbaum, Labour member of the House of Lords
Lawrence Kestenbaum (born 1955), attorney, politician, and the creator of the Political Graveyard website
Richard Kestenbaum, partner in Triangle Capital LLC
Ryel Kestenbaum (also called Ryel K), one of the founders of the Pink Mammoth artist collective
Dave Kestenbaum, Director of the Certification for Sustainable Transportation
