Richard Trench may refer to:
Richard Trench (politician) (1710–1768), Irish MP for Banagher and Galway County Richard Trench, 2nd Earl of Clancarty (1767–1837), his grandson, Dutch noble, Irish and British MP, diplomat Richard Trench, 4th Earl of Clancarty (1834–1891), Irish peer and Dutch noble Richard Chenevix Trench (1807–1886), Irish poet and Archbishop of Dublin