George Crawford Hyndman (1796–1867) was an Irish auctioneer and amateur biologist. He was the son of Cherry Crawford Hyndman (1766-1845) and James Hyndman (1761?–1825), a Belfast Woollen merchant. Both parents, in the 1790s, were active in the republican Society of United Irishmen. In heavily garrisoned Belfast, neither appear to have been implicated in the 1798 rebellion, but, for whatever reason, James Hyndman did not join other merchants and local dignitaries in signing a proclamation published just before the risings to the north and south of the town in June, which expressed support for the government.