Frederick Villiers Clarendon (c.1820 – 17 October 1904) was an Irish architect noted for his design work on a number of large public buildings in Dublin, including the Natural History Museum and Arbour Hill Prison.

[2] Clarendon's most remembered work is Ireland's Natural History Museum on Merrion Street adjacent to Leinster House, known as the "Dead Zoo".

[3][4] The Royal Dublin Society had been obliged to use a public architect in order to obtain treasury funding, and the building was taken over by the State in 1877.

Clarendon provided his services free of charge to design the Mariners Hall, Howth in 1867.

[1] This then served as a Presbyterian Meeting House for over thirty years, services being conducted through the medium of Scottish Gaelic, the language of the immigrant seasonal fishermen of the village.