Richard Phené Spiers (1838 – 3 October 1916 London) was an English architect and author. He occupied a unique position amongst the English architects of the latter half of the 19th century, his long mastership of the architectural school at the Royal Academy of Arts having given him the opportunity of moulding and shaping the minds of more than a generation of students. Spiers wrote most of the articles dealing with architecture for the 1911 Encyclopædia Britannica.