Joseph Mordaunt Crook,, generally known as J. Mordaunt Crook, is an English architectural historian and specialist on the Georgian and Victorian periods. He is an authority on the life and work of the Victorian architect William Burges, his biography published in 1981, and reissued in 2013, has been described as "one of the most substantial studies of any Victorian architect".

William Burges was an English architect and designer. Among the greatest of the Victorian art-architects, he sought in his work to escape from both nineteenth-century industrialisation and the Neoclassical architectural style and re-establish the architectural and social values of a utopian medieval England. Burges stands within the tradition of the Gothic Revival, his works echoing those of the Pre-Raphaelites and heralding those of the Arts and Crafts movement.