Friedrich Wilhelm III, Duke of Saxe-Altenburg

Friedrich Wilhelm III
Duke of Saxe-Altenburg
Reign1669–1672
PredecessorFriedrich Wilhelm II
SuccessorErnst I
Born(1657-07-12)12 July 1657
Altenburg
Died14 April 1672(1672-04-14) (aged 14)
Altenburg
HouseHouse of Saxe-Altenburg
FatherFriedrich Wilhelm II, Duke of Saxe-Altenburg
MotherMagdalene Sibylle of Saxony
ReligionLutheran

Friedrich Wilhelm III (12 July 1657 – 14 April 1672) was a duke of Saxe-Altenburg.

He was the second son of Friedrich Wilhelm II, Duke of Saxe-Altenburg and Magdalene Sybille of Saxony, his second wife.