Callmann is a

German surname Personal names in German-speaking Europe consist of one or several given names (''Vorname'', plural ''Vornamen'') and a surname (''Nachname, Familienname''). The ''Vorname'' is usually gender-specific. A name is usually cited in the "Name order, ...

. Notable people with the surname include: * Moritz Callmann Wahl (1829–1887), German writer * Rudolf Callmann (1892–1976), German American legal scholar
Cassandra Callmann
(1989 - ), American chemist

See also