John Hore (fl.1642–1691) was an Irish Jacobite politician.
In 1689 he was appointed High Sheriff of County Waterford.
The same year, he was elected as a Member of Parliament for Dungarvan in the Patriot Parliament summoned by James II of England.
[1] He was attainted in 1691 for his support for Jacobism.
He married Catherine Bourke, daughter of Sir John Bourke of Derrymaclachtney and granddaughter of Richard Burke, 6th Earl of Clanricarde.