Malayan Emergency Tunku Tan Sri Osman (24 November 1919 – 19 April 1994) was the first Malaysian Armed Forces Chief of Staff.

General Tunku Osman was known for his strong principles and self-discipline as well as highly respected by the ranks and files of the army.

Tunku Osman received his early education at Hutchings School, Penang and later enrolled into the Sultan Abdul Hamid College (SAHC), Alor Star, Kedah.

In 1945, Tunku Osman joined the Force 136 and was commissioned as second lieutenant (May 1945) and was absorbed into the General List.

For his many services and contributions, he was conferred various medals and honours: He died on 19 April 1994 and was buried near Tunku Abdul Rahman's grave at Kedah Royal Mausoleum at Langgar.