Others
- John Spenser or Spencer (1559–1614), one of the translators of the authorized version (1611) of the Bible and president of Corpus Christi College, Oxford
- John Spencer (Master of Corpus Christi College, Cambridge) (1630–1693)
- Pseudonym of William Edward Vickers (1889–1965), English mystery writer
- John Spencer (actor) (1946–2005), American actor in television series' including L.A. Law and The West Wing
- John Spencer (boat designer) (born 1931), New Zealand architect and boat designer
- John Spencer (historian) (1907–2005), also representative to Ethiopia
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