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John Jenkins (governor) (died 1681), colonial governor of North Carolina •
John Theophilus Jenkins (1829–1919), Canadian physician and political figure in Prince Edward Island. •
John Jones Jenkins, 1st Baron Glantawe (1835–1915), Welsh MP for Carmarthen •
Edward Jenkins (MP) (John Edward Jenkins, 1838–1910), British barrister, author and Liberal Party politician •
John J. Jenkins (1843–1911), Wisconsin congressman and Puerto Rico judge •
John Jenkins (Australian politician) (1851–1923), American-born Premier of South Australia •
John Jenkins (British politician) (1852–1936), British politician, MP for Chatham, 1906–1910 •
John George Jenkins (1919–2007), Scottish farmers leader, TV presenter and politician •
John Barnard Jenkins (1933–2020), Welsh nationalist, effective leader of Mudiad Amddiffyn Cymru in the 1960s •
John Jenkins (American politician) (1952–2020), Maine state senator, mayor and candidate for governor of Maine • Sir
John Jenkins (diplomat) (born 1955), British ambassador to Saudi Arabia •
John Jenkins (Welsh politician) (born 1981), local politician in Wales ==Musicians, artists and entertainers==