Joseph Dumont (1811–1859) was a Belgian Neogothic architect who primarily designed and remodelled churches and prisons.

Dumont was born in Düsseldorf, Germany, to Belgian parents.^[1] He trained as an architect and was appointed to the Commission royale des Monuments (established 1835). He worked on the restoration of medieval churches in Aarschot, Sint-Truiden, Saint-Hubert, and Nivelles, and of St Martin's Cathedral, Ypres.^[1] He designed the church of St Boniface, Ixelles, modern prison cells in Brussels, Liège, Marche, Dinant, and Leuven, and a reformatory at Ruiselede (East Flanders).^[1] He designed somewhere in the region of 30 Neogothic churches.^[1] He died in Saint-Josse-ten-Noode, Brussels, on 29 March 1859.^[1]