John Platts (1775–1837) was an English Unitarian minister and author, a compiler of reference works.
Platts supplemented his ministerial income by teaching and compiling educational works.
In 1825 Platts published five volumes of A New Universal Biography, containing lives of eminent persons in all ages and countries, arranged in chronological order, with alphabetical index.
In 1827 appeared, Platts's New Self-interpreting Testament, containing many thousands of various Readings and Parallel Passages collected from the most approved Translators and Biblical Critics.
In the preface the author claims to have combined the merits of Francis Fox and Clement Cruttwell.