Other
- John Black (privateer) (1778–1802), captain, privateer and survivor of the mutiny on the Lady Shore
- John Black (journalist) (1783–1855), editor of the Morning Chronicle, 1817–1843
- John Black (judge) (1817–1879), Canadian
- John McConnell Black (1855–1951), Australian botanist
- Sir John Black (businessman) (1895–1965), British motor industry executive
- John D. F. Black, television writer from the 1950s to the 1980s
- John H. Black (born 1949), American radio astronomer
- John Black (director) (born 1940), retired British TV director
- John Black (1818–82) (1818–1882), Presbyterian clergyman who had emigrated from Scotland to New York State
- John Black (engineer), hardware/software engineer, project engineer, and engineering manager
- John Black (composer) (c. 1520–1587), Scottish singer and composer
- John Black (1817–79) (1817–1879), Canadian fur trader
- John Nicholson Black (born 1922), Principal of Bedford College, University of London, 1971–1981
- J. B. Black (1883–1964), Scottish historian
- J. R. Black (1826–1880), Scottish publisher, journalist, writer, photographer, and singer
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