William Nicol may refer to: William Nicol (geologist) (1770–1851), Scottish physicist and geologist William Nicol (surgeon) (1790–1879), Member of Parliament for Dover, 1859–1865 William Nicol (Transvaal) (1887–1967), clergyman and Governor of the Transvaal William Nicol (teacher) (1744–1797), Scottish schoolmaster and friend of Robert Burns