Frederick Pepys Cockerell was an English architect, active in the mid- to late-19th century. He was born in March 1833 at 87 Eaton Square, London, England, the second son of architect, Charles Robert Cockerell (born 1788, died 1863) and Anna Rennie Cockerell (born 1803, died 1872). His grandfather was the architect and surveyor, Samuel Pepys Cockerell (born 1753, died 1827), whose maternal grandfather was the famous diarist Samuel Pepys's nephew.
Cockerell's work was influenced by French and Italian architecture. He had spent some time studying and sketching in France during the early 1850s, and in Italy in 1855. He regarded sculptural detail as an important element in architecture. One of Cockerell's first jobs, when he worked for his father, was designing the sculptural details for St George's Hall, Liverpool, England.
Cockerell became a notable architect of country houses from the 1860s onwards. His designs include Lythe Hill, Surrey, England (1868); the house at Blessingbourne, County Tyrone, Northern Ireland (built between 1870 and 1874); the very unusual concrete-built Down Hall in Essex, England (built between 1871 and 1873); and Crawley Court, Hampshire, England in 1877.