John of Bohemia (10 August 1296 – 26 August 1346), also called John of Luxembourg and John the Blind, was the Count of Luxembourg from 1309, King of Bohemia from 1310, and titular King of Poland. He was the eldest son of the Holy Roman Emperor Henry VII and his wife Margaret of Brabant. He is famous for having died while fighting in the Battle of Crécy at age 50, after having been blind for a decade.