John Leys
 John Leys (January 27 1834 – after 1890) was an Ontario lawyer and political figure. He represented Toronto in the Legislative Assembly of Ontario from 1886 to 1890 as a Liberal member.He was born in Pickering Ontario County Upper Canada in 1834 the son of Francis Leys a Scottish immigrant. He was educated at the Toronto Academy. Leys studied law with Angus Morrison was called to the bar in 1860 and set up practice in Toronto.