Here is a listing of steam traction engine manufacturers divided by county of origin.
| Company | City | Years | Comments |
| John Abell Engine & Machine Works | Toronto, ON | 1881-1902 | His company was sold, in 1902, to Advance Thresher and the Minneapolis Threshing Machine Co. , which reorganized it into the American Abell Engine & Thresher Co., Ltd. |
| American Abell Engine & Thresher Co. | Toronto, ON | 1902-1912- | In 1902 the Advance Thresher and the Minneapolis Threshing Machine Co. jointly purchased the John Abell Engine & Machine Works plant in Toronto and renamed it the American-Abell Engine and Thresher Company Limited |
| Robert Bell Engine & Thresher | Seaforth, ON | 1901-1928 | Robert Bell had built at least one portable steam engine (ca 1900's) enlisting the help of John Finlayson who was an experienced carpenter. In 1901 Robert Bell received permission to build the Port Huron Engine & Thresher Company's engines in Seaforth, ON, Canada. A 14 H.P. engine was the first to be built. |
| F. X. Bertrand Manufacturing Co. | St. Hyacinthe, QC | ca. 1916 | Canadian industry, commerce, and finance states that this firm manufactured steam traction engines. |
| John Goodison Thresher Co. Ltd. | Sarnia, ON, | 1904-1920's | AKA Tunnel City Thresher Works |
| MacDonald Thresher Co. Ltd. | New Hamburg, ON | 1890's-1917 | In 1905, arrangements were made to build the Baker steam traction engine in Canada. The Baker engine was manufactured by the A.D. Baker Company of Swanton, Ohio. |
| New Hamburg Mfg. Co. Ltd. | New Hamburg, ON | 1890's-1917 | Manufacturer of steam traction engines, portable steam engines (ca 1890's) and threshers. |
| N.C. Peterson & Sons Engine Works | Sarnia, ON | 1884-1901 | These engines were of the single cylinder, rear mount, and return flue type. |
| J.M. Ross, Sons & Co. Ltd. | St. Catharines, ON | ca. 1890's | Manufactured the Cornell steam traction engine. |
| Sawyer-Massey & Co. Ltd. | Hamilton, ON | 1904-1920's | This firm also imported Aveling & Porter steam road rollers for sale in Canada. |
| Waterloo Mfg. Co. Ltd. | Waterloo, ON | 1890's-1925 | Known as the Lion Brand. |
| Waterous Engine Works Co. | Brantford, ON | 1881-1911 | Manufactured copies of D. June & Co.'s Champion engines and Buffalo Pitts steam traction engines. |
| Geo. White & Sons Co. | London, ON | 1890's-1924 | White's engines were all simple and were built plain and sturdy, with no fancy fittings. |
| Company | City | Years | Comments |
| Adamson | Duckinfield, Cheshire, England | 1858-1859 | Manufactured Steam Traction Engines 1858-1859 |
| Allchin & Co. | Northhampton, England | 1879-1930 | Founded as the William Allchin Ltd. |
| Allen & Simmonds | Reading, Berks, England | -1909- | Manufactured Steam Traction Engines ca 1909. |
| John Allen & Co. | Cowley, Oxford, England | -1913- | Manufactured Steam Traction Engines ca 1913 |
| Appleby Brothers | Southwark, London, England | -1880's- | Later moved to East Greenwich, England |
| Archer & Hall | Gateshead-on-Tyne, England | 1880's-1890's | |
| Armitage & Rushton | Chatteris, Cambridge, England | 1879-1881 | |
| Armstrong-Whitworth | Newcastle-upon-Tyne, Durham, England | ca. 1926 | |
| Richard Bach & Co. | Birmingham, West Midlands, England | ca. 1926 | Engine and boiler manufacturers, millwrights and general engineers |
| Barrows & Stewart | Banbury, Oxon, England | ca.1879 | Manufactured Steam Traction Engines; Steam thrashing engines; straw and hay elevators. |
| George Biddell | Ipswich, England | ca. 1863 | |
| J. W. Boulton | Ashton-Under-Lyne, England | ca. 1904 | |
| Brown & May | Devizes, Wiltshire, England | 1864-1912 | AKA North Wilts Foundry— Steam engines; thrashing machines; elevators; portable granaries. |
| Charles Burrell & Sons, Ltd. | Thetford, Norfolk, England | 1845-1930 | Manufactured Portable Steam Engines (ca 1846) and Steam Traction Engines (1856-1930) |
| Cambridge, Parham, and Webb | Bristol, Avon, England | ca. 1852 | Manufactured Steam Traction Engines; Combined vertical engines and boilers; combined double-blast thrashing machines; hay, corn, and straw elevators. |
| Carrett, Marshal & Co. | Leeds, West Yorks, England | 1861-1866 | Manufactured Steam Traction Engines. |