Sir Martin Lumley, 1st Baronet (c. 1596 – c. 1651) was an English politician who sat in the House of Commons from 1641 to 1648. He supported the Parliamentary cause in the English Civil War. Martin was the son of Sir Martin Lumley, Lord Mayor of London and his first wife Mary Witham, daughter of Robert Witham of Yorkshire. He succeeded to his father's estate of Great Bardfield, Essex in 1634 and was High Sheriff of Essex from 1639 to 1640. He was created baronet on 8 January 1641 and knighted at Whitehall on the following day. Lumley died in about 1651 in which year his will was proved.