John M'Clellan (also spelled M'Lellan, M'Clelland, Mackleland, Makclellan, and Macleland; 1609–1650) was a seventeenth century teacher and minister. Educated in Scotland he started work as a schoolmaster at Newtownards. He also began to preach there initially with the sanction of the church. He took part in an unsuccessful attempt to sail to America on board the in 1636. After this he returned to Scotland where he became a minister where he served from 1638 until his death in 1650.