Who defeated Humayun in the Battle of Chausa on June 26, 1539? A) Kamran Mirza B) Bahadur Shah C) Sher Shah Suri D) Alam Shah Related MCQs: Humayun was defeated by Sher Shah Suri in the Battle of Chausa and …….? When did the battle of Chausa take place? Humayun defeated the Afghans in August 1532 in the Battle of: Who defeated Humayun in the Battle of Kannauj in1540?