Entertainment
John Reynolds (actor) was born in 1991. He is an American actor and writer. John Reynolds (musician) is a record producer. He was the first husband of singer Sinéad O'Connor. John Reynolds (writer) lived from 1588 to 1655. He was an English merchant and writer. John Hamilton Reynolds lived from 1794 to 1852. He was an English poet, satirist, critic, and playwright. John Lawrence Reynolds was born in 1939. He is a Canadian author. Jonathan Reynolds (writer) lived from 1942 to 2021. He was an American actor and writer.
Military
- John Reynolds (Roundhead) (1625–1657), soldier who fought in the English Civil War
- John Reynolds (Royal Navy officer) (1713–1788), British naval officer and leader of the Province of Georgia
- John F. Reynolds (1820–1863), American army officer who served during the US Civil War
- John Williams Reynolds (1817–1874), British cavalry officer and scientist who studied organic chemistry
Politics
- John Reynolds (born 1942) is a Canadian politician from British Columbia.
- John Reynolds (1670–1699) was an Irish Member of Parliament.
- John Reynolds (1797–1868) was a politician from Dublin, Ireland.
- Jonathan Reynolds (born 1980) is a British politician and Labour Co-operative member of Parliament for Stalybridge and Hyde.
- John Reynolds (born 1787) was an American politician from Pennsylvania and the editor of the Lancaster Journal.
- John Reynolds (1788–1865) was an American politician and governor of Illinois.
- John Reynolds (1814–1890) was an American politician from Indiana.
- John A. Reynolds (1820–1889) was an American politician from Pennsylvania.
- John F. Reynolds (1852–1934) was an American politician from Wisconsin.
- John Hazard Reynolds (1819–1875) was an American politician from New York.
- John Merriman Reynolds (1848–1933) was an American politician from Pennsylvania.
- John W. Reynolds Sr. (1876–1958) was an American politician from Wisconsin.
- John W. Reynolds Jr. (1921–2002) was an American politician and governor of Wisconsin.
Science and technology
- John Reynolds (agriculturist) (1703–1779), English farmer and agricultural innovator
- John Reynolds (astronomer) (1874–1949), British astronomer
- John Reynolds (ecologist) (born 1959), Canadian ecologist
- John Reynolds (physicist) (1923–2000), American physicist
- John Reynolds (researcher), New Zealand medical researcher
- John C. Reynolds (1935–2013), American computer scientist
- John Russell Reynolds (1828–1896), British neurologist
- John Reynolds (neuroscientist), American neuroscientist
Sports
- John Reynolds (born 1963), British motorcycle racer
- John J. Reynolds (1889–1987), American track and field athlete
Other people
- John Reynolds (priest), English Anglican priest
- John Reynolds (epigrammatist) (1584–1614), English writer of short, clever sayings
- J.F. Reynolds (John F. Reynolds), American architect
- John Henry Reynolds (educator) (1842–1927), British advocate for technical education
- John N. Reynolds, banker
- John W. Reynolds (Oregon attorney) (1875–1942), American attorney and educator