Emperor Frederick may refer to:

• Frederick Barbarossa (Frederick I), Holy Roman Emperor
• Frederick II, Holy Roman Emperor (1194–1250)
• Frederick III, Holy Roman Emperor (1415–1493)
• Frederick III, German Emperor, first Hohenzollern German emperor

• Pfalz D.VII
• Pfalz D.XV
• Pfalzmuseum für Naturkunde
• P:FAMGUY
• Pfanderbahn
• Pfander, Carl
• Pfann
• Pfannenbach
• Pfannenstiel (ship)
• Pfannenstiel (ship, 1998)
• Pfannenstock
• Pfanni
• Pfannkuchen (disambiguation)
• P:FANTASY
• Pfanzelter
• PFAPD
• PFAPG
• Pfarmers
• Pfarrer Braun
• Pfarrkirche St. Gallus
• Pfarr Log House
• PFA Scotland
• PFA Scotland Team of the Year
• Pfa (Soccer)
• PFASS