John I of Opava (also known as John of Fulnek, Czech: Hanuš z Fulneka, Hanuš Hlubčický, German: Johann I. von Troppau-Leobschütz; c. 1420 – 1454) was a member of the Opava branch of the Bohemian Přemyslid dynasty.
[1] His parents were Duke Wenceslaus II of Opava and Głubczyce and Elisabeth of Kravař.
After his father's death (between 1445 and 1447) John I and his younger brother John II "the Pious" jointly inherited the Duchy of Głubczyce and one third of the Duchy of Opava.
John I died unmarried and childless in 1454.
This article about a member of the German nobility is a stub.