Woldemar is a given name. Notable people with the name include:
Waldemar, form of the name common in ScandinaviaWoldemar Bargiel (1828–1897), German composer of classical musicWoldemar Brinkmann (1890–1959), German architect and interior designer associated with Nazi architectureWoldemar Hägglund (1893–1963), Major General Finnish Army in the second world warWoldemar Kernig (1840–1917), Russian and Baltic German internist and neurologist, saved many with meningitisWoldemar Mobitz (1889–1951), German physicianOskar Woldemar Pihl (1890–1959), Russian silversmith, Fabergé workmasterWoldemar Voigt (1850–1919), German physicist who taught at the Georg August University of GöttingenWoldemar von Daehn (1838–1900), Finnish politicianWoldemar von Seidlitz (1850–1922), Russian-born German art historianUlrich Frédéric Woldemar, Comte de Lowendal (1700–1755), German-born French soldier and statesmenWoldemar, Prince of Lippe (1824–1895), sovereign of the Principality of Lippe from 1875