Eisenmenger (German for "ironmonger") is a German surname. Notable people with the surname include:
Arthur Eisenmenger (1914–2002), German graphic designer August Eisenmenger (1830–1907), Austrian painter Johann Andreas Eisenmenger (1654–1704), German orientalist Rudolf Eisenmenger (1902–1994), Austrian artist, painter Samuel Eisenmenger, genannt Sideocrates (1534–1585), German physician, theologian and astrologer Victor Eisenmenger (1864–1932) Austrian medical doctor, known for Eisenmenger's syndrome Wolfgang Eisenmenger (physicist) (1930–2016), German physicist Wolfgang Eisenmenger (born 1944), German forensic pathologist Gregory Eisenmenger (born 1952), American lawyer See also Eisenmenger's syndrome