Following is a list of diesel locomotives built by the Montreal Locomotive Works, a Canadian subsidiary of the American Locomotive Company from 1904-1964. From 1964-1975 the company was known as MLW-Worthington and was owned by Bombardier from 1975 until its closure in 1985.

Switchers (S series)

{|class="wikitable sortable"

!Model!!Specification!!Build date!!Total<br />produced!!class="unsortable"|Wheel<br />arrangement!!Prime mover!!Power output!!class="unsortable"|Image

|- style=text-align:center

| S-2 || E1540 || 1940–1950 || 40 <!--CN 7946–7955 (10) and CP 7010–7064/96–98 (65) built by ALCo at Schenectady --> || B-B || 6-539T || ||

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| S-3 || E-1530A || 1950–1957 || 163 || B-B || 6-539 || || 100px

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| S-4 || E-1540A,<br />E-1540B || 1949–1957 || 146 || B-B || 6-539T || ||

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| rowspan='2'|E-1800 || E-1800 || 1951 || 2 || B-B || rowspan='2'|none || rowspan='2'| yard slug || rowspan='2'|

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| E-1800a || 1957 || 2 || B-2

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| S-7 || DL-1000 or ME-1000 || 1957 || 29 || B-B || 6-539T || || 100px

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| S-10 || DL-066 || 1958 || 13 || B-B || 6-539 || ||

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| S-11 || DL-406 || 1959 || 10 || || || ||

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| S-12 || DL-410 || 1958 || 11 || || || ||

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| S-13 || DL-411,<br />DL-411A || 1959–1967 || 56 || || || ||

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|}

Cab units (FA & FP series)

{|class="wikitable sortable"

!Model!!Specification!!Build date!!Total<br />produced!!class="unsortable"|Wheel<br />arrangement!!Prime mover!!Power output!!class="unsortable"|Image

|- style=text-align:center

| FA-1 || DL-208A, DL-208B ||1949-1950 || 28 <!-- CP 4000–4007 (8) built by Alco at Schenectady -->|| B-B ||12-244B || <!-- 1600 hp DL-208C not built in Canada --> ||

|- style=text-align:center

| FB-1 || DL-209A, DL-209B ||1949-1950 || 20 <!-- CP 4400–4403 (4) built by Alco at Schenectady --> || B-B ||12-244B || <!-- 1600 hp DL-209C not built in Canada --> ||

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| FA-2 || DL-212, DL-212A || 1951–1953 || 45 || B-B ||12-244 || ||

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| FB-2 || DL-213, DL-213A || 1951–1953|| 21 || B-B ||12-244 || ||

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| FPA-2 || DL-212, DL-212A || 1953–1955 || 19 || B-B ||12-244D || ||

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| FPB-2 || DL-213, DL-213A || 1953–1955 || 14 || B-B ||12-244D || ||

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| FPA-4 || DL-218 || 1958–1959 || 34 || B-B ||12-251B || ||

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| FPB-4 || DL-219 || 1958–1959 || 12 || B-B ||12-251B || ||

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|}

Early roadswitchers (RS, RSC, RSD series)

RS series (B-B)

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!Model!!Specification!!Build date!!Total<br />produced!!class="unsortable"|Wheel<br />arrangement!!Prime mover!!Power output!!class="unsortable"|Image

|- style=text-align:center

| RS-1 || ME1000R (E-1641A) || 1954 || 3|| B-B || 6-539T || ||

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| RS-2 || ME1500R (E-1661B) || 1946–1950 || 9 || B-B || 12-244 || ||

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| RS-3 || ME1600R (E-1662, E-1662A, E1662B) || 1951–1956 || 146 || B-B || 12-244 || ||

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| RS-10 || DL-700 || 1954–1957 || 129 || B-B || 12-244 || || 150px

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| RS-11 || DL-701 ||1957, 1963–1964 || 76 || B-B || 12-251B || ||

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| RS-18 || DL-718 || 1956–1968 || 351 || B-B || 12-251B || || 150px

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| RS-23 || DL-811A || 1959–1966 || 40 || B-B || 6-251C || || 150px

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|}

RSC series (A1A-A1A)

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!Model!!Specification!!Build date!!Total<br />produced!!class="unsortable"|Wheel<br />arrangement!!Prime mover!!Power output!!class="unsortable"|Image

|-style=text-align:center

| RSC-3 || E-1662, E-1662A, E-1662B || 1950–1952 || 99 || A1A-A1A || 12-244 || ||

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| RSC-13 || DL-800 || 1955–1957 || 35 || A1A-A1A || 6-539T || ||

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| RSC-24 || DL-814 || 1959 || 4 || A1A-A1A || 12-244 || ||

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| RSC-14 ||DL-814 || 1975–1976|| 38|| A1A-A1A || 12-251B || ||(RS-18 rebuild with A1A-A1A trucks from RSC-13 by CN)

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|}

RSD series (C-C)

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!Model!!Specification!!Build date!!Total<br />produced!!class="unsortable"|Wheel<br />arrangement!!Prime mover!!Power output!!class="unsortable"|Image

|-style=text-align:center

| RSD-12 || DL-702 || 1956–1963 || 10 || C-C || 12-251B || ||<br />for&nbsp;Companhia Siderúrgica Nacional-Brazil

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| RSD-17 || DL600B (DL-624) || 1957 || 1 || C-C || 16-251B || ||

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| RSD-35 || DL-535E || 1969–1971|| 10|| Co-Co || 6-251D || ||7 units built by Alco and completed by MLW in 1969, 3 units built by MLW in 1971

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| RSD-39 || DL-535B || 1974|| 3|| C-C || 6-251D || || PeruRail ##433-436

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| RSD-39 || DL-535B || 1974|| 2|| C-C || 6-251D || ||150px

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| RSD-35 || DL-535E (W)|| 1982 || 4 || C-C || 6-251D || ||all built by BBD, Held in Montreal (Quebec) until 1991; single unit to White Pass & Yukon which in turn was sold to Cumbres and Toltec, and 3 to US Gypsum

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|}

Later road switchers

4-axle units

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!Model!!Specification!!Build date!!Total<br />produced!!class="unsortable"|Wheel<br />arrangement!!Prime mover!!Power output!!class="unsortable"|Image

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| C-424 || DL-640A || 1963–1967 || 92 || B-B || 16-251B|| ||

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| M-420 || || 1973–1977 || 90 || B-B || 12-251C|| || 150px

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| M-420B || || 1975 || 8 || B-B || 12-251C|| ||

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| M-420R || || 1974–1975 || 5 || B-B || 12-251C|| ||

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| M-420TR || type 1 || 1972 || 2 || B-B || 12-251C|| ||built for Roberval and Saguenay

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| M-420TR || type 2 || 1975 || 15 || B-B || 12-251C|| ||built for Ferrocarril del Pacifico

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| M-424 || || 1980-1981 || 72 || B-B || 12-251E|| ||(16 built for Ferrocarril del Pacifico, 3 built for Unidos del Sureste and 53 for Ferrocarriles Nacionales de México)

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6-axle units

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!Model!!Build date!!Total<br />produced!!class="unsortable"|Wheel<br />arrangement!!Prime mover!!Power output!!class="unsortable"|Image

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| M-627 || || || C-C || || ||

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| MX615 || 1972–1979 || 74 || 1C-C1 || 8-251F || ||

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| MX620 || 1973–1980 || 145 || C-C || 12-251C3 || ||

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| MX624 || 1975–1983 || 69 || C-C || 12-251E || ||

|- style="text-align:center"

| MX626

(Yugoslavia)

| 1972–1982 || 32 || C-C || 12-251F || ||

|-style=text-align:center

| MX-627 (Greece)|| 1973 || 20 || C-C || 12-251F || || 150px

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| MX627|| 1972–1978 || 33 || C-C|| 12-251F || ||

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| MX630 || 1974–1980 || 30 || C-C || 12-251E || ||

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| MX636 || 1974–1980 || 10 || C-C || 12-251F || ||

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| MXS620 || 1973–1982 || 100 || C-C || 12-251C3 || ||

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| MXS624 || 1973–1983 || 33 || C-C || 12-251E || ||

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| MXS627 || 1978–1980 || 10 || C-C || 12-251F || ||150px

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| MXS630 || 1978–1982 || 33 || C-C || 12-251E || ||

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| C-630M || 1965–1969 || 56 || C-C || 16-251E || ||

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| M-630 || 1969–1973 || 75 || C-C || 16-251E || ||

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| M-630W || || || C-C || 16-251E || ||

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| M-636 || 1969–1975 || 185 || C-C || 16-251F || ||

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| M-636 (Australia) || || || C-C || 16-251F || ||

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| MX-636 (Greece)