Beiser is a surname. Notable people with the surname include:
Brendan Beiser, Canadian actorDaniel V. Beiser, Democratic member of the Illinois House of RepresentativesEdward Beiser, Dean at Brown University, political scientist and a constitutional scolar.Frederick C. Beiser, one of the leading scholars of German IdealismMaya Beiser, American cellistMorton Beiser, Canadian professor, psychiatrist, and epidemiologistTim Beiser, literary pseudonym of American-Canadian author and journalist J. Timothy HuntTrude Beiser, Austrian former alpine skierVince Beiser, an American-Canadian journalist