Archibald Blair (1752–1815) was a naval surveyor and lieutenant in the Bombay Marine. He joined the Bombay Marine, received his first commission in 1771 and in 1792 was promoted captain. In 1772, as a midshipman, he went on his first survey mission along the coasts of India, Iran and Arabia. In 1780 he was lieutenant on a ship captured by a French man-of-war off the Cape of Good Hope. He was kept prisoner by the French until 1784 when they handed him over to the Dutch who returned him to the Bombay Marine that same year. He was given the then considerable sum of £200 on account of his long captivity and suffering. Between 1786 and 1788 he took part in a number of survey missions, to the Chagos archipelago, to Diamond Harbour south of Calcutta and to adjacent parts of the Hooghly river.