Baltzer may refer to:
Baltzer, Mississippi, U.S. Baltzer Science Publishers, Amsterdam-based defunct publisher of scientific journals
People Baltzer Fleischer (1703–1767), Norwegian civil servant Anna Baltzer (born 1979), American public speaker, author and activist for Palestinian human rights Christian Baltzer (born 1936), French basketball player Eduard Baltzer (1814–1887), founder of the first German vegetarian society Johann Baptista Baltzer (1803–1871), German Roman Catholic theologian Wendy Baltzer, American veterinarian, small animal surgeon and academic
See also Baltser, a German colony that became Krasnoarmeysk, Saratov Oblast, Russia Thomas Baltzar (c. 1630–1663), German violinist and composer Balzer Balcer