| Highland Railway F class | |
| Powertype: | Steam |
| Designer: | David Jones |
| Builder: | Dübs & Co. (10) HR Lochgorm Works (7) |
| Serialnumber: | Dübs: 714–723 |
| Builddate: | 1874 (10), 1876–1888 (7) |
| Totalproduction: | 17 |
| Whytetype: | 4-4-0 |
| Uicclass: | 2′B n2 |
| Leadingdiameter: | 3feet |
| Driverdiameter: | 6feet |
| Watercap: | 1800impgal |
| Boiler: | 4feet diameter |
| Boilerpressure: | 140- |
| Totalsurface: | 1228square feet |
| Cylindercount: | Two, outside |
| Cylindersize: | 18x |
| Valvegear: | Allan |
| Operator: | Highland Railway London, Midland & Scottish |
| Operatorclass: | HR: Duke; F (from 1901) |
| Fleetnumbers: | HR: 60–69, 4 (→ 31), 71–75, 84 |
| Withdrawndate: | 1907-1923 |
| Disposition: | All scrapped |
The Highland Railway F class 4-4-0s were a class of British steam locomotives introduced in 1874. The first 10 were built by Dübs and Company in 1874. A further seven were built in Lochgorm works between 1876 and 1888. Originally they were the first Bruce class, and later became known as the Duke class to avoid confusion with the second Bruce class. As part of Peter Drummond's 1901 classification scheme they became class F.
They featured 6-feet 3½-inch driving wheels and weighed 41LT. The original batch had boilers pressed to 140lbf/in2, the later batch had slightly smaller boilers but a higher pressure of 150-1NaN-1. Of typical Allan/Jones appearance, they had outside cylinders of 18by.
Withdrawal commenced in 1907, and by 1909 all-but-one of the Dübs-built examples had been withdrawn. Numbers 31A and 74 were retired in 1913, number 71A was broken up in 1915. The remaining five survived until 1923 but none of them acquired a new London, Midland and Scottish Railway number.
| 60 | Bruce | Dübs & Co. | 714 | 1909 | style=text-align:left | Renamed Sutherland in 1884 | |
| 61 | Sutherlandshire | Dübs & Co. | 715 | 1907 | style=text-align:left | Renamed Duke in 1877 | |
| 62 | Perthshire | Dübs & Co. | 716 | 1909 | style=text-align:left | Renamed Stemster in 1889, Huntingtower in 1899, and Aultwherrie in 1903 | |
| 63 | Inverness-shire | Dübs & Co. | 717 | 1907 | style=text-align:left | Renamed Inverness | |
| 64 | Morayshire | Dübs & Co. | 718 | 1909 | style=text-align:left | Renamed Seafield c. 1889 | |
| 65 | Nairnshire | Dübs & Co. | 719 | 1909 | style=text-align:left | Renamed Dalraddy | |
| 66 | Ross-shire | Dübs & Co. | 720 | 1907 | style=text-align:left | Renamed Ardvuela | |
| 67 | The Duke | Dübs & Co. | 721 | 1923 | style=text-align:left | Renamed Cromartie in 1877. Renumbered 67A in 1918, 70A in 1923. | |
| 68 | Caithness-shire | Dübs & Co. | 722 | 1907 | style=text-align:left | Renamed Caithness, then Muirtown | |
| 69 | The Lord Provost | Dübs & Co. | 723 | 1909 | style=text-align:left | Renamed Sir James, then Aldourie | |
| 4 | Ardross | Lochgorm | — | 1913 | style=text-align:left | Renamed Auchtertyre in 1901. Renumbered 31 in 1899, and 31A in 1911. | |
| 71 | Clachnacuddin | Lochgorm | — | 1915 | style=text-align:left | Renumbered 71A in 1912 | |
| 72 | Bruce | Lochgorm | — | 1923 | style=text-align:left | Renamed Grange c. 1886. Renumbered 72A in 1915 | |
| 73 | Thurlow | Lochgorm | — | 1923 | style=text-align:left | Name removed at unknown date; renamed Rosehaugh in 1898. Renumbered 73A in 1916 | |
| 74 | Beaufort | Lochgorm | — | 1913 | style=text-align:left | Name removed at unknown date | |
| 75 | Breadalbane | Lochgorm | — | 1923 | style=text-align:left | Renumbered 75A in 1917 | |
| 84 | Dochfour | Lochgorm | — | 1923 | style=text-align:left | Renumbered 84A in 1917 | |