Sir John Betjeman was an English poet, writer, and broadcaster. He was Poet Laureate from 1972 until his death. He was a founding member of The Victorian Society and a passionate defender of Victorian architecture, helping to save St Pancras railway station from demolition. He began his career as a journalist and ended it as one of the most popular British Poets Laureate and a much-loved figure on British television.

John Beverley Robinson was a Canadian politician, lawyer and businessman. He was mayor of Toronto and a provincial and federal member of parliament. He was the fifth Lieutenant Governor of Ontario between the years 1880–1887.

Sir John Bickerton Williams was an English, nonconformist author and lawyer. He was knighted by Queen Victoria in 1837.

John Bidlake was an English author, artist and educator.

John Bigland was an English schoolmaster and later a historian.

John Marcus Bishop is an English comedian, presenter, actor and former footballer.

John Cannon "J. L." Black was an American politician who served in the Georgia Senate between 1994 and 1996.

John Blair Linn (March 14, 1777 – August 30, 1804) was an American clergyman and poet.

John Eaton Calthorpe Blofeld was a British writer on Asian thought and religion, especially Taoism and Chinese Buddhism.

Bernhardt Patrick John O’Mara Bockris was a South African professor of chemistry, latterly at Texas A&M University. During his long and prolific career he published some 700 papers and two dozen books. His best known work is in electrochemistry but his output also extended to environmental chemistry, photoelectrochemistry and bioelectrochemistry. In the 1990s he experimented with cold fusion and transmutation, topics on which his unorthodox views provoked controversy.