Historical league cup of the American Soccer League. It began in 1924-25 as the American Soccer League Cup, was renamed the Lewis Cup for the following edition and ended in 1962-63. Interruptions and unplayed seasons are documented explicitly.
| Season | American League Cup winner | Runner-up | Trophy |
|---|---|---|---|
| 1962/63 | Newark Ukrainian Sitch | Philadelphia Ukrainian Nationals Final matches: 1-1 and 1-0. | — |
| 1961/62 | Not held The Lewis Cup was not held. | ||
| 1960/61 | Not held The Lewis Cup was not held. | ||
| 1959/60 | Not held The Lewis Cup was not held. | ||
| 1958/59 | Philadelphia Ukrainian Nationals | New York Hakoah Final: 3-2. | — |
| 1957/58 | Philadelphia Uhrik Truckers | Philadelphia Ukrainian Nationals Final matches: 4-1 and 0-2. | — |
| 1956/57 | Elizabeth Falcons | - Elizabeth Falcons won the Lewis Cup; no reliable final opponent is recorded. | — |
| 1955/56 | Not held The Lewis Cup was not held. | ||
| 1954/55 | Philadelphia Nationals | New York Brookhattan Final matches: 2-2 and 3-1. | — |
| 1953/54 | Newark SC | New York Eintracht Final: 5-3. | — |
| 1952/53 | Newark Portuguese | Philadelphia Nationals Final matches: 3-0 and 1-3. | — |
| 1951/52 | Philadelphia Nationals | New York Americans Final: 2-1. | — |
| 1950/51 | Philadelphia Nationals | New York Hakoah Final matches: 4-2 and 1-3; Philadelphia won on corner kicks. | — |
| 1949/50 | New York Americans | Philadelphia Nationals Final matches: 2-1 and 2-2. | — |
| 1948/49 | Philadelphia Americans | Kearny Irish Final: 2-1. | — |
| 1947/48 | Kearny Scots | New York Brookhattan Final matches: 3-2 and 1-1. | — |
| 1946/47 | Baltimore SC | Kearny Irish Final opponent recorded; complete score not established. | — |
| 1945/46 | Brooklyn Hispano | Baltimore SC Final matches: 1-4 and 3-0; Brooklyn won on corner kicks. | — |
| 1944/45 | New York Brookhattan | Brooklyn Wanderers Final matches: 1-2 and 3-1. | — |
| 1943/44 | Kearny Irish | Brooklyn Wanderers Final opponent recorded; complete score not established. | — |
| 1942/43 | Philadelphia German-American | Kearny Irish Final matches: 6-1 and 2-0. | — |
| 1941/42 | New York Brookhattan | Kearny Irish Final opponent recorded; complete score not established. | — |
| 1940/41 | Philadelphia German-American | New York Brookhattan Final opponent recorded; complete score not established. | — |
| 1939/40 | Kearny Scots | Philadelphia German-American Final opponent recorded; complete score not established. | — |
| 1938/39 | Not held The Lewis Cup was not held. | ||
| 1937/38 | Not held The Lewis Cup was not held. | ||
| 1936/37 | Not held The Lewis Cup was not held. | ||
| 1935/36 | Not held The Lewis Cup was not held. | ||
| 1934/35 | Not held The Lewis Cup was not held. | ||
| 1933/34 | Not held The Lewis Cup was not held. | ||
| 1932/33 | Not held The Lewis Cup was not held. | ||
| 1931/32 | Not held The Lewis Cup was not held. | ||
| 1930/31 | Not held The Lewis Cup was not held. | ||
| 1929/30 | Fall River Marksmen | New York Hakoah All-Stars Final matches: 2-1 and 3-0. | — |
| 1928/29 | New York Nationals | New Bedford Whalers Final series: 2-3, 2-1 and 4-2. | — |
| 1927/28 | Bethlehem Steel FC | Boston Soccer Club Final matches: 3-2 and 2-2. | — |
| 1926/27 | Boston Soccer Club | Brooklyn Wanderers Final matches: 2-0 and 3-0. | — |
| 1925/26 | New Bedford Whalers | New York Giants Final matches: 5-1 and 0-3; New Bedford won 5-4 on aggregate. | — |
| 1924/25 American Soccer League Cup | Boston Wonder Workers | Fall River Marksmen Final: 2-1. | — |