Benedict Williamson (1868–1948) was an architect who designed many Romanesque Revival churches in the United Kingdom who later became a Roman Catholic priest.

For the Lithuanians, Williamson designed a building of London stock brick whose walls are punctuated by large round windows.

[8] In 1927, in collaboration with his original partner John Foss, he helped with the completion of St Boniface's Church in Tooting, adding a tower, arches and Egyptian designs.

[4] In 1921 he published Supernatural Mysticism, an enthusiastic book of some 260 pages, which carries a commendatory Introduction by Cardinal Bourne, Archbishop of Westminster.

[2] An appreciation of his life[10] was written by Henry Edward George Rope, a fellow convert who, in 1915, had taken over the editorship of The Catholic Review of which Benedict Williamson had been the founding editor two years earlier.