Henry III of Rosenberg (; died 28 July 1412) was a Bohemian nobleman who served as Supreme Burgrave of the Kingdom of Bohemia between 1396 and 1398, and between 1400 and 1403 in the Kingdom of Bohemia, an Imperial State in the Holy Roman Empire.
He was a member of the League of Lords and participated in the suppression of King Wenceslas IV in 1394 and 1402. He later served as the head of the .
Henry died in 1412 leaving two children, his nine-year-old son Oldà Âich II of Rosenberg and his daughter Kateà Âina. Both were sired with his second wife Elià ¡ka of Kravaà Âe. Henry's first son, Peter III of Rosenberg, died in 1406.
Henry was depicted in the 2022 film Medieval. He was portrayed by German actor Til Schweiger.