I. Friedrich

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)