The LNER 'J' 0-6-0 Locomotives: J21 - J41
Due to the large numbers of different 0-6-0 types, they have been split into four indexes:
The 0-6-0 Tender Locomotive Classes J1 - J20, can be found here
The 0-6-0 Tank & Diesel Locomotive Classes J45 - J70, can be found here
The 0-6-0 Tank Locomotive Classes J71 - J94, can be found here
The 0-6-0 Tender Locomotive Classes J21 - J41
| Class | Builder | Designer | First Built | Last Withdrawal | Comments |
| '1001' | S&D / NER | Bouch | 1874 | 1923 | 'Long Boiler' |
| '398' | NER | Fletcher | 1874 | 1928 | |
| J21 | NER | T.W. Worsdell | 1886 | 1962 | |
| J22 | NER | McDonnell | 1883 | 1930 | |
| J23 | H&BR | M. Stirling | 1889 | 1938 | |
| J24 | NER | W. Worsdell | 1894 | 1951 | |
| J25 | NER | W. Worsdell | 1898 | 1962 | |
| J26 | NER | W. Worsdell | 1904 | 1962 | |
| J27 | NER | W. Worsdell | 1906 | 1967 | |
| J28 | H&BR | M. Stirling | 1911 | 1938 | |
| J31 | NBR | Wheatley | 1867 | 1937 | |
| J32 | NBR | Drummond | 1876 | 1925 | |
| J33 | NBR | Holmes | 1883 | 1938 | |
| J34 | NBR | Drummond | 1879 | 1928 | 'Wee Drummonds' |
| J35 | NBR | Reid | 1906 | 1962 | |
| J36 | NBR | Holmes | 1888 | 1967 | 'Eighteen Inchers' |
| J37 | NBR | Reid | 1914 | 1967 | |
| J38 | LNER | Gresley | 1926 | 1967 | "J27 Modified" |
| J39 | LNER | Gresley | 1926 | 1962 | Modification of J38 |
| J40 | M&GN | S.W. Johnson | 1896 | 1944 | Taken over by the LNER in 1936 |
| J41 | M&GN | S.W. Johnson | 1896 | 1943 | Taken over by the LNER in 1936 |