Lewis Campbell (/ˈkæmbəl/; 3 September 1830 – 25 October 1908) was a Scottish writer and classical scholar.

He was fellow and tutor of Queen's College, Oxford (1855–1858), vicar of Milford, Hampshire (1858–1863), and professor of Greek at the University of St Andrews (1863–1894).

[8] An Anglican vicar, in October 1893 Campbell was reportedly preaching at the University of St Andrews' College Church which maintains links with the Scottish Episcopalian denomination.

Ross had recognized the importance of stylometric methods in Plato chronology which Campbell had introduced in his editions of the Sophistes and Politicus of 1869.

Recent scholars such as Charles H. Kahn and Diskin Clay, have each advanced the ordering and grouping of Plato's dialogues according to the same method.