| Club: | Dumbarton |
| Season: | 1919–1920 |
| Manager: | George Livingstone |
| Stadium: | Boghead Park, Dumbarton |
| League: | League |
| League Result: | 11th |
| Cup1: | Scottish Cup |
| Cup1 Result: | First Round |
| League Topscorer: | Duncan Walker (20) |
| Season Topscorer: | Duncan Walker (20) |
| Highest Attendance: | 12,000 |
| Lowest Attendance: | 2,000 |
| Average Attendance: | 4,025 |
| Pattern B1: | _inch_blackhoops |
| Pattern La1: | _thin_black_hoops |
| Pattern Ra1: | _thin_black_hoops |
| Pattern So1: | _2 gold stripes |
| Leftarm1: | FFD700 |
| Body1: | FFD700 |
| Rightarm1: | FFD700 |
| Shorts1: | FFFFFF |
| Socks1: | 000000 |
| Prevseason: | 1918–19 |
| Nextseason: | 1920–21 |
The 1919–20 season was the 43rd Scottish football season in which Dumbarton competed at national level, entering the Scottish Football League and the Scottish Cup. In addition Dumbarton entered the Dumbartonshire Cup and the Dumbartonshire Charity Cup.
See main article: 1919–20 Scottish Football League. There was an improvement from the previous season with an 11th-place finish out of 22, with 39 points, 32 behind champions Rangers.[1]
See main article: 1919–20 Scottish Cup. With the resumption of the Scottish Cup, Dumbarton were perhaps unfortunate to come up against Rangers in the first round. However they gave a good account of themselves, and lost a very close encounter by the only goal, after a 0-0 draw.
For the second successive season Dumbarton failed to progress from the sectional stage of the Dumbartonshire Cup.
Dumbarton won the Dumbartonshire Charity Cup by defeating Vale of Leven in the final.
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Source:[2]
| Player | From | Date | |
|---|---|---|---|
| James McDonald | 1 May 1919 | ||
| James Scott | 30 May 1919 | ||
| Robert Duffus | Dundee | 31 May 1919 | |
| John Black | Dumbarton Harp | 10 Jun 1919 | |
| James Martin | Rangers | 5 Jul 1919 | |
| Scott Duncan | Rangers | 15 Jul 1919 | |
| Patrick O'Connell | Manchester United | 7 Aug 1919 | |
| Joseph Till | Wellington Town | 19 Aug 1919 | |
| Charles Gordon | Queen's Park | 20 Aug 1919 | |
| John Hagan | Dumbarton Harp | 20 Sep 1919 | |
| John Duffus | Bo'ness | 21 Sep 1919 | |
| John Robertson | Motherwell (loan) | 1 Jan 1920 | |
| Joseph Willis | Bo'ness (loan) | 11 Mar 1920 | |
| John Clark | (loan) | 10 Apr 1920 |
| Player | To | Date | |
|---|---|---|---|
| Archibald Ritchie | 20 May 1919 | ||
| John Rowan | 20 Oct 1919 | ||
| Alex Marshall | Dumbarton Harp (loan) | 12 Dec 1919 | |
| Thomas Raeside | Bo'ness (loan) | 2 Jan 1920 | |
| John Black | Albion Rovers | 28 Jan 1920 | |
| Hugh Burns | Renton | ||
| James Cumming | West Ham | ||
| James Dawson | St Bernards | ||
| John Durnin | |||
| Joseph Hendry | |||
| John McKim | |||
| William Ritchie | Bury | ||
| Duncan Walker | Bo'ness (loan) | ||
| Herbert Yarnell | Reading |
Source:[3]
In addition Robert Carmichael, David Finnie, Val Lawrence, John McEwan, James McGregor, James McIntosh, James Neil, william Wilson and James Young all played their final 'first XI' games in Dumbarton colours.