The 1927–28 season was the 19th in the history of the Isthmian League, an English football competition.
St Albans City were champions for the second season in a row, winning their third Isthmian League title.
League table
| Season | 1927–28 |
|---|---|
| Champions | St Albans City |
| Matches played | 182 |
| Goals scored | 794 (4.36 per match) |
← 1926–27 1928–29 → | |
| Pos | Team | Pld | W | D | L | GF | GA | GR | Pts |
|---|---|---|---|---|---|---|---|---|---|
| 1 | St Albans City | 26 | 15 | 5 | 6 | 86 | 50 | 1.720 | 35 |
| 2 | London Caledonians | 26 | 12 | 9 | 5 | 63 | 38 | 1.658 | 33 |
| 3 | Ilford | 26 | 14 | 4 | 8 | 72 | 54 | 1.333 | 32 |
| 4 | Woking | 26 | 13 | 5 | 8 | 72 | 56 | 1.286 | 31 |
| 5 | Nunhead | 26 | 13 | 2 | 11 | 57 | 54 | 1.056 | 28 |
| 6 | Wimbledon | 26 | 12 | 3 | 11 | 57 | 48 | 1.188 | 27 |
| 7 | Leytonstone | 26 | 13 | 1 | 12 | 53 | 56 | 0.946 | 27 |
| 8 | Clapton | 26 | 8 | 10 | 8 | 52 | 47 | 1.106 | 26 |
| 9 | Dulwich Hamlet | 26 | 8 | 9 | 9 | 56 | 49 | 1.143 | 25 |
| 10 | Casuals | 26 | 8 | 8 | 10 | 54 | 58 | 0.931 | 24 |
| 11 | Wycombe Wanderers | 26 | 9 | 5 | 12 | 60 | 69 | 0.870 | 23 |
| 12 | Oxford City | 26 | 7 | 7 | 12 | 36 | 57 | 0.632 | 21 |
| 13 | Civil Service | 26 | 8 | 4 | 14 | 38 | 76 | 0.500 | 20 |
| 14 | Tufnell Park | 26 | 4 | 4 | 18 | 38 | 82 | 0.463 | 12 |