Duke Philip Sigismund of Brunswick-Wolfenbüttel 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.
- Occupation
- Catholic priest
- Position held
- Prince-Bishop of Osnabrück, diocesan administrator
- Citizenship
- Germany
- Born
- July 1, 1568
- Died
- March 19, 1623