Others
- Richard Clarke (frontiersman) (1845–1930), English frontiersman and scout in the United States; inspiration for character Deadwood Dick
- Richard Clarke (merchant) (1711–1795), Boston merchant and Loyalist, father-in-law of John Singleton Copley
- Richard Clarke (radio personality) (born 1978), radio presenter on 95.8 Capital FM and The Big Top 40 Show
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