| Year: | 2018 |
| Team Colour: |
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| Font Colour: | black |
| League: | Super League |
| League Rank: | 3rd |
| League Wins: | 20 |
| League Draws: | 1 |
| League Losses: | 9 |
| Points For: | 785 |
| Points Against: | 632 |
| Playoff Result: | Semi-final |
| Cup: | Challenge Cup |
| Cup Result: | Sixth round |
| Cup Wins: | 0 |
| Cup Losses: | 1 |
| Ceo Title: | Chairman |
| Ceo: | Ian Fulton |
| Coach Title: | Head Coach |
| Agg Attendance: | 114,061 |
| Avg Attendance: | 7,604 |
| High Attendance: | 9,557 |
| Low Attendance: | 5,406 |
| Top Tries: | Greg Eden (18) |
| Top Goals: | Jamie Ellis (57) |
| Top Points: | Jamie Ellis (123) |
| List: | yes |
| List Link: | List of Castleford Tigers seasons |
The 2018 season was the Castleford Tigers' 93rd season in the Rugby Football League and their 11th consecutive season in the top flight of English rugby league. The club competed in the 2018 Super League and the 2018 Challenge Cup.
See main article: 2018 Super League season.
| Date | Round | Versus | H/A | Venue | Result | Score | Tries | Goals | Attendance | Report | +Super 8s results | 10 August | S1 | Wigan Warriors | A | DW Stadium | 22–24 | 10,293 | RLP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17 August | S2 | Warrington Wolves | H | Mend-A-Hose Jungle | 28–18 | 7,142 | RLP | |||||||||||||||
| 1 September | S3 | Catalans Dragons | H | Mend-A-Hose Jungle | 36–4 | 7,658 | RLP | |||||||||||||||
| 7 September | S4 | Hull F.C. | A | KCOM Stadium | 28–6 | 10,570 | RLP | |||||||||||||||
| 13 September | S5 | Huddersfield Giants | H | Mend-A-Hose Jungle | 44–12 | 7,279 | RLP | |||||||||||||||
| 21 September | S6 | Wakefield Trinity | H | Mend-A-Hose Jungle | 42–10 | 7,860 | RLP | |||||||||||||||
| 28 September | S7 | St Helens | A | Totally Wicked Stadium | 0–26 | 9,813 | RLP |
| Date | Round | Versus | H/A | Venue | Result | Score | Tries | Goals | Attendance | Report | +Play-off results | 5 October | Semi-finals | Wigan Warriors | A | DW Stadium | 0–14 | 13,461 | RLP |
|---|
| Date | Round | Versus | H/A | Venue | Result | Score | Tries | Goals | Attendance | Report | +Challenge Cup results | 12 May | 6 | St Helens | H | Mend-A-Hose Jungle | 18–36 | 5,342 | RLP |
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