Sigmar is a masculine given name, and may refer to:
Sigmar Berg (born 1975), Austrian artist, photographer, and fashion designer Sigmar Bieber (born 1968), German footballer Sigmar Gabriel (born 1959), German politician Sigmar Polke (1941–2010), German painter and photographer Sigmar Vilhjálmsson (born 1977), Icelandic television personality Sigmar Wittig (born 1940), German academic Sigmar Guðmundsson (born 1969), Icelandic politician Sigmar Heldenhammer, a fictional character from Warhammer Fantasy Battles