John Frederick of Holstein-Gottorp, Prince-Bishop, Roman Catholic archbishop (d. 1634)
John Frederick of Schleswig-Holstein-Gottorp (born 1 September 1579 in Gottorp, a part of today's Schleswig; died 3 September 1634 in Altkloster, a part of today's Buxtehude) was the Lutheran Administrator of the Prince-Archbishopric of Bremen, the Prince-Bishopric of Lübeck and the Prince-Bishopric of Verden.