This is a list of locomotives and multiple unit classes of the DSB, the primary train operator in Denmark. Steam locomotive classes were usually designated by a single capital letter, whereas diesel locomotives and DMUs are named with two (occasionally, three) letters, the first being an M for "motor"; electric locomotives and EMUs are given two-letter combinations, the first being an E. The classes are referred to as "litra" (from Latin littera, "letter") in Danish, e.g. "litra MY" for the class MY locomotives. In addition to this class designation, each locomotive or multiple unit within a class has its own number.
The list is sorted chronologically by date of first delivery of a locomotive or multiple unit of the particular class. For classes no longer in regular service at DSB, the year of last retirement is listed. Some classes have been sold to Railion after DSB Gods was merged with it in 2001; in that case, year of retirement is put in parentheses. For each class, the wheel arrangement is given in UIC notation.
Steam locomotives
| Name (litra) |
Introduced |
Retired |
Wheel arr. |
Notes |
| A 129-159 | 1882 | 1956 | 2'B | |
| B 21-26, 45-49 | (1893) | 1932 | 1'B | |
| G 77...651 | 1884 | 1968 | C | Delivered in three series (#77-81, #101-106 and #160-173 + #601-651, respectively) |
| K 501-600 | 1894 | 1974 | 2'B | |
| F 423...700 | 1898 | 1976 | C | |
| D 801-900 | 1902 | 1974 | 1'C | |
| C 701-719 | 1903 | 1969 | 2'B | |
| P 901-933 | 1907 | 1962 | 2'B1' | |
| R 934-963 | 1912 | 1972 | 2'C | Delivered in two series (#934-953 and #954-963, respectively) |
| H 783-800 | 1923 | 1976 | 1'D | Delivered in two series (#789-800 and #783-788, respectively) |
| S 721-740 | 1924 | 1976 | 1'C2' | |
| Q 337-351 | 1930 | 1976 | D | |
| E 964-999 | (1937) | 1976 | 2'C1' | Former Swedish class F |
| PR 901...930 | 1943 | 1964 | 2'C1' | Rebuilt from class P locomotives |
| T 297-299 | (1948) | 1967 | 2'C | Former German class P 8 (BR 38) |
| N 201-210 | (1952) | 1970 | 1'E | Former German BR 50/BR 52 |
Diesel locomotives
| Name (litra) |
Introduced |
Retired |
Wheel arr. |
Notes |
| MT 101-106 | 1927 | 1943 | A1-1A | |
| MV 115-116 | 1929 | 1955 | 1AA2 | |
| MW 117-118 | 1929 | 1938 | A1-2A | |
| MX 131-132 | 1932 | 1958 | 2-D-2 | |
| MY 1101-1159 | 1954 | 2001 | A1A-A1A | 5 locomotives with weaker prime mover renamed MV in 1968 |
| MH 201-203 | 1957 | 1993? | C | |
| MY 1201-1202 | 1957 | 1969 | A1A-A1A | Danish-built locomotives designed to compete with the Swedish-American built "MY class" locomotive |
| MT 151-167 | 1958 | 2000 | Bo-Bo | |
| MH 301-420 | 1960 | 2002 | C | |
| MX 1001-1045 | 1960 | 1993 | A1A-A1A | |
| MZ 1401-1461 | 1967 | (2001) | Co-Co | |
| ME 1501-1537 | 1981 | - | Co-Co | |
| MJ 506, 510 | 1993 | 1994 | Bo | Returned to manufacturer as DSB was not satisfied with the locomotives |
| MK 601-625 | 1996 | (2001) | B | |
DMUs
| Name (litra) |
Introduced |
Retired |
Wheel arr. |
Notes |
| MA 1-3 | 1925 | 1953 | 1A | Renamed from class M 1-3 in 1928; renumbered 48-50 in 1934; renumbered 601-603 in 1941 |
| MC 21-22 | 1926 | 1947 | 1A1 | Renumbered 611-612 in 1941 |
| ME 31-47 | 1927 | 1956 | 1A | Renamed from class M 31-47 in 1928; renumbered 621-627 in 1941 |
| MF 51-68 | 1928 | 1956 | 1A | Renumbered 631-647 in 1941; 5 rebuilt to class MC 651-655 in 1950 |
| MR 201-206 | 1928 | 1956 | 2-AA | Renumbered 531-534 in 1941 |
| ML 84-99 | 1930 | 1958 | 2-AA | Renumbered 501-515 in 1941 |
| MQ 207-210 | 1932 | 1958 | 3-A1A | Renumbered 520-524 in 1941 |
| MP 540-549 | 1934 | 1966 | 3-A1A | Renumbered from 251-260 in 1941 |
| MO 551...1999 | 1935 | 1984 | 2-B or 3-B | |
| MS 401-406 | 1935 | 1973 | | Lyntog, coupled with class AA passenger cars in MS-AA-MS consists; renumbered from 1-8 in 1941 |
| MB 407-416 | 1937 | 1973 | | Lyntog, coupled with class AB and FJ passenger cars in MB-AB-FJ-MB consists; renumbered from 9-18 in 1941 |
| MK 675...683 | 1943 | 1971 | | Paired with class FK passenger cars |
| MBF 481-484 | (1949) | 1958 | 1A-A1 | Built 1926-29; taken over from various private railways |
| MDF 491...497 | (1949) | 1957 | | Built 1932; taken over from various private railways |
| MA 460-470 | 1963 | 1990 | | Lyntog, coupled in 4-car consists (or 2 4-car consists back to back) |
| MR 4001-4099 | 1978 | - | 2-B | Coupled back to back in pairs; paired MR-MRD instead since 1981 |
| MRD 4201-4299 | 1981 | - | 2-B | Coupled back to back with MR |
| ML 4901-4907 | 1984 | - | 1A-A1 | Coupled with FL passenger cars in ML-FL-ML or ML-FL-FL-ML consists |
| MFA 5001-5096 | 1989 | - | | Coupled as IC3 with passenger car FF and DMU class MFB |
| MFB 5201-5296 | 1989 | - | | Coupled as IC3 with passenger car FF and DMU class MFA |
| MQ 4111...4922 | 2002 | - | | Coupled back to back in pairs of MQ 41xx-MQ 49xx |
| | | | |
| MG | 2009 | - | | Coupled as IC4 with passenger cars FG and FH in MG-FG-FH-MG consists |
| MP | 2012 | 2016 | | Coupled as IC2 with passenger car FP |
EMUs
| Name (litra) |
Introduced |
Retired |
Wheel arr. |
Notes |
| ER 2001...2144 | 1993 | - | | Coupled as IR4 with FR passenger cars in ER 20xx-FR 22xx-FR 23xx-ER21xx consists |
| ET 4301...4579, 4400...4611 | 2000 | - | | Coupled as Øresundstog with FT passenger car in ET 43xx-FT 47xx-ET 45xx and ET 44xx-FT 48xx-ET 46xx consists |