Watford have played Harlow Town 1 times in competitive football, winning 1, drawing 0 and losing 0, first meeting on 26 Jan 1980 and most recently on 26 Jan 1980. Every meeting is listed below.
| Date | Season | Competition | Venue | Opponent | Score | Scorers | Att |
|---|---|---|---|---|---|---|---|
| 26 Jan 1980 | 1979–80 | FA Cup | H | Harlow Town | 4–3 |