Sultan Sallehuddin Badlishah was the 27th Sultan of Kedah, a state in Malaysia. He ascended to the throne in 1943 and ruled until 1945. His reign was marked by the challenges of World War II and the Japanese occupation of Malaya. After the war, Sultan Sallehuddin played a significant role in the post-war recovery of Kedah. He was known for his commitment to the welfare of his people and worked towards modernizing the state. His leadership helped lay the foundation for Kedah's development in the years that followed.