Mejdell is a surname. Notable people with the surname include:
Dag Mejdell (born 1957), Norwegian businessperson and chief executive officer of Posten Norge Glør Thorvald Mejdell (1851–1937), Norwegian barrister, judge, and political writer Johan Ernst Mejdell (1773–?), Norwegian jurist and politician Nicolai Mejdell (1822–1899), Norwegian mining engineer Peter Ludwig Mejdell Sylow (1832–1918), Norwegian mathematician Thorvald Mejdell (1824–1908), Norwegian forester Vilhelm Mejdell (1904–1989), Norwegian marketing agent and sports official
See also Mijdel