| 2018 State of Origin series | |
|---|---|
 The view of ANZ Stadium during Game II. | |
| Won by |  New South Wales (14th title) |
| Series margin | 2–1 |
| Player of the series |  Billy Slater |
| Top points scorer(s) | Valentine Holmes (28) |
| Top try scorer(s) | Valentine Holmes (4) |
The 2018 State of Origin series was the 37th annual best-of-three series between the Queensland and New South Wales rugby league teams. Before this series, Queensland had won 21 times, NSW 13 times, with two series drawn. The 2018 series was won by New South Wales, after winning the first 2 games of the series, their first since 2014, and their second since 2005.[1]
Kevin Walters coached Queensland for the third year in a row, while New South Wales were coached by Brad Fittler after he replaced Laurie Daley in November 2017.[2]
- ^ "Rugby League Tables / State of Origin".
- ^ Chammas, Michael (24 November 2017). "Fittler confirmed as new Blues coach". NRL.com. Archived from the original on 24 November 2017. Retrieved 24 November 2017.