I. Friedrich

Ayrıca bakınız: I. Friedrich, II. Friedrich, III. Frederik, IV. Friedrich, V. Friedrich, VI. Friedrich, VII. Friedrich, VIII. Friedrich, IX. Friedrich, X. Friedrich, XI. Frederik (Danimarka kralı) ve XII. Friedrich (Hohenzollern Kontu)

I. Frederick şu anlamlara gelebilir:

• Frederick of Utrecht veya I. Frederick (815/16–834/38), Utrecht Piskopu
• Frederick I (Archbishop of Cologne) (c. 1075–1171)
• I. Friedrich (Kutsal Roma İmparatoru) veya Friedrich Barbarossa, (1122–1190) Almanya kralı ve Kutsal Roma Cermen İmparatoru
• I. Friedrich, Avusturya (Babenberg) Dükü (c.1175–1198)
• I. Friedrich, Avusturya (Habsburg) (1286–1330); "Frederick the Fair"
• I. Friedrich, Elector of Saxony (1370–1428)
• I. Friedrich, Elector of Brandenburg (1371–1440), also Burgrave of Nuremberg (as Frederick VI)
• I. Friedrich, Elector Palatine (1449–1476)
• I. Frederik (Danimarka kralı) (1471–1533)
• I. Friedrich, Württemberg Dükü (1557–1608)
• I. Friedrich, Saxe-Gotha-Altenburg Dükü (1646–1691)
• I. Frederick William (1620-1688)
• I. Friedrich (Prusya Kralı) (1657–1713)
• I. Frederick (İsveç) (1676–1751)
• I. Friedrich (Württemberg) (1754–1816)
• I. Friedrich, Anhalt Dükü (1831-1904)