Ditmar may refer to:

People with the surname[edit]

• Art Ditmar (1929–2021), American Major League Baseball pitcher
• Karl von Ditmar (1822–1892), Baltic German geologist and explorer
• Nikolay Fyodorovitch von Ditmar (1865–1919), Russian politician and businessman

People with the given name[edit]

• Ditmar Jakobs (born 1953), German soccer player
• Ditmar Staffelt, member of the 16th German Bundestag

See also[edit]

• Dietmar, a given name
• Ditmar Award, for Australian science fiction
• Ditmars (disambiguation)
• Dittmar, a surname