John Vanthof

John Vanthof
Vanthof in 2020
Chief Whip of the Ontario New Democratic Party
Assumed office
July 13, 2022
LeaderPeter Tabuns
Critic, Agriculture and Food, Rural Development
Assumed office
August 23, 2018
LeaderAndrea Horwath and Peter Tabuns
Deputy Leader of the Ontario New Democratic Party
In office
August 23, 2018 – July 13, 2022
Serving with Sara Singh
LeaderAndrea Horwath
Preceded byJagmeet Singh
Succeeded bySol Mamakwa and Doly Begum
Member of the Ontario Provincial Parliament
for Timiskaming—Cochrane
Assumed office
October 6, 2011
Preceded byDavid Ramsay
Personal details
Born1963 (age 60–61)
New Liskeard, Ontario
Political partyNew Democratic
RelationsErnie Hardeman, uncle
ResidenceEarlton, Ontario
OccupationDairy farmer
PortfolioDeputy Leader and critic for Agriculture and Food, and for Rural Development (2018-)

John Vanthof MPP (/ˈvænθɔːf/ VAN-thoff, born c. 1963) is a politician in Ontario, Canada. He is a New Democratic member of the Legislative Assembly of Ontario who was elected in 2011. He represents the riding of Timiskaming—Cochrane. On August 23, 2018 he was named one of the party's two Deputy Leaders alongside Sara Singh, and critic for Agriculture and Food, and for Rural Development.[1] As of August 11, 2024, he serves as the House leader of the Official Opposition and as critic for Agriculture and Food, for Rural Affairs.