| 1984 State of Origin series | |
|---|---|
| Won by |  Queensland (3rd series title) |
| Series margin | 2–1 |
| Points scored | 91 |
| Attendance | 79,309 (ave. 26,436 per match) |
| Top points scorer(s) |  Ross Conlon (18) |
| Top try scorer(s) | Kerry Boustead (4) |
The 1984 State of Origin series was the third time the annual three-game series between the representative rugby league football teams of New South Wales and Queensland was played entirely under "state of origin" selection rules. With Queensland wrapping up the series in the first two matches it produced the first dead rubber finish and an infamous opening minute brawl in game II.