Every competitive match Watford played in 1905–06, in Third Division South — 2 matches, 1 won, 0 drawn, 1 lost, with scorers and attendances where the record holds them.
| Date | Competition | Venue | Opponent | Their season | Score | Scorers | Att |
|---|---|---|---|---|---|---|---|
| 13 Jan 1906 | FA Cup | A | Worcester City | 6–0 | |||
| 3 Feb 1906 | FA Cup | A | Arsenal | Arsenal 1905–06 | 0–3 |
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