Nathaniel Plimer (1757–1822) was an English miniature portrait painter. Plimer was born to a clockmaker, also named Nathaniel, and his wife variously called Mary Elizabeth or Eliza, in Wellington, Shropshire. Plimer lived the rest of his life in London apart from about a decade (1804-1814) in Edinburgh, Scotland.Plimer had four children, the youngest of whom, his daughter Adela, married the painter, Andrew Geddes.