Philip William Wyatt (5 March 1785 – 1835) was an English architect and member of the Wyatt family. He was the youngest son of the architect James Wyatt and his wife Rachel (Lunn) Wyatt, and a nephew of Samuel Wyatt, cousin to Sir Jeffry Wyatville (born Wyatt). His two major commissions were Conishead Priory (1821–36), a large Gothic Revival mansion in Lancashire and Wynyard Park, County Durham a large Neo-Classical Mansion for the 3rd Marquess of Londonderry 1822–30.