Air Marshal Aspy Merwan Engineer DFC (15 December 1912 – 1 May 2002) was an officer in the Indian Air Force who rose through the ranks to become independent India's second Chief of the Air Staff, succeeding Subroto Mukerjee in 1960 and preceding Arjan Singh.
His flying career began in 1930 at the age of 17, when as a co-pilot he accompanied his friend R. N. Chawla to Croydon Airport, London from Karachi in British India, by flight and were the first Indians to do so. Shortly afterwards, he won the Aga Khan contest for being the first Indian to fly the journey between England and India, solo and within a one-month time frame.
Engineer subsequently joined the Indian Air Force, trained at RAF Cranwell, saw action on the North Western Frontier Provinces (NWFP) and at Burma and as a result was awarded the Distinguished Flying Cross (DFC). By the end of the Second World War he became Wing Commander.
Following retirement, he served as India's ambassador to Iran and later spent time living in California, before his last days in Mumbai.