John Kay may refer to:

Arts and entertainment

• John Kay (Poet Laureate) (14th century), English Poet Laureate of the United Kingdom
• John Caius the Elder (fl. 1480), or John Kay, poet
• John Kay (caricaturist) (1742–1826), Scottish caricaturist
• Johnny Kay (born 1940), lead guitarist for Bill Haley & His Comets from 1961 to 1967
• John Kay (musician) (born 1944), musician and lead singer of Canadian-American rock band Steppenwolf
• John Kay (poet born 1958), British poet and teacher

Journalism

• John Kay (cricket journalist) (1910–1999), British cricket correspondent for The Argus
• John Kay (journalist, born 1943) (1943–2021), British journalist convicted of the manslaughter of his wife, worked on Rupert Murdoch's The Sun
• John Kay (economist) (born 1948), Scottish economist, Financial Times columnist and author
• Jon Kay (born 1969), BBC broadcast journalist

Politics and government

• John Kay (MP) (1568–1624), English MP for Eye, 1610
• Sir John Kay (judge) (1943–2004), Lord Justice of the Court of Appeal of England and Wales

Sport

• John Kay (Scottish footballer), Scottish footballer of the 1870s and 1880s
• John Kay (English footballer) (born 1964), English footballer

Technology and design

• John Kay (flying shuttle) (1704–c. 1779), English inventor of the flying shuttle textile machinery
• John Kay (spinning frame) (18th century), English developer of the spinning frame textile machinery
• John A. Kay (1830–?), American architect in Columbia, South Carolina
• John Albert Kay, Canadian electrical engineer

See also

• John Cay (1790–1865), Scottish advocate, pioneer photographer and antiquarian
• John Kaye (disambiguation)
• Jack Kay (c. 1951–2015), American academic
• John K (disambiguation)
• Jonathan Kay (born 1968), Canadian journalist