Patrick Hill Thoms Friba Arias (1873–1946) was a 20th-century Scottish architect, based in eastern Scotland.
He was born on 27 September 1873 in Kilmacolm the son of Thomas Smith Thoms from a family of Angus farmers and solicitors.
William Gillespie Lamond followed him from Ower's office to Cappon's and was a great influence on his style and development.
In 1901 he went into partnership with William Fleming Wilkie, setting up office at 18 Commercial Street, Dundee.
[4] In 1927 he went into a new partnership with Donald Ross, previously his chief assistant, still at the South Tay Street office.