Roman Catholic bishop (1568–1623)
Duke Philip Sigismund of Brunswick-Wolfenbüttel (July 1, 1568 in Hessen am Fallstein – 19 March 1623 in Iburg) was a Lutheran administrator of the Prince-Bishopric of Verden and Osnabrück (1591–1623) son of Julius, Duke of Brunswick and Lunenburg, Prince of Wolfenbüttel and Hedwig of Brandenburg.
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! colspan="3" style="border-top: 5px solid #FABE60;" |Religious titles
! colspan="3" style="border-top: 5px solid #ACE777;" | Regnal titles