'''Siegbahn''' is a surname. Notable people with the surname include:
*Bo Siegbahn (1915–2008), Swedish diplomat *Kai Siegbahn (1918–2007), Swedish physicist, Nobel Prize in 1981 *Manne Siegbahn (1886–1978), Swedish physicist, Nobel Prize in 1924
==See also== *Siegbahn notation, spectroscopic notation for x-ray lines introduced by Manne Siegbahn *X unit, unit of length defined by Manne Siegbahn *10446 Siegbahn, a minor planet named for Kai Siegbahn
{{surname|Siegbahn}}