| Year: | 1989 |
| League: | NSWRL |
| League Rank: | 6th |
| Cup: | Challenge Cup |
| League Wins: | 15 |
| League Draws: | 0 |
| League Losses: | 9 |
| Points For: | 416 (71 tries, 65 goals, 2 field goals) |
| Points Against: | 326 (58 tries, 46 goals, 2 field goals) |
| Ceo Title: | CEO |
| Coach: | Allan Fitzgibbon |
| Captain: | David Hatch |
| Stadium: | Caltex Field |
| Avg Attendance: | 6,994 |
| Top Tries: | Andrew Ettingshausen (14) |
| Top Goals: | Alan Wilson (40) |
| Top Points: | Alan Wilson (125) |
| Prev Season: | 1988 |
| Next Season: | 1990 |
The 1989 Cronulla-Sutherland Sharks season was the 23rd in the club's history. They competed in the NSWRL's 1989 Winfield Cup premiership as well as the 1989 Panasonic Cup.
| width=175 | Team | Pld | W | D | L | PF | PA | PD | Pts | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | South Sydney | 22 | 18 | 1 | 3 | 390 | 207 | +183 | 37 | |
| 2 | Penrith | 22 | 16 | 0 | 6 | 438 | 241 | +197 | 32 | |
| 3 | Balmain | 22 | 14 | 1 | 7 | 380 | 236 | +144 | 29 | |
| 4 | Canberra | 22 | 14 | 0 | 8 | 457 | 287 | +170 | 28 | |
| 5 | Brisbane | 22 | 14 | 0 | 8 | 398 | 290 | +108 | 28 | |
| 6 | Cronulla-Sutherland | 22 | 14 | 0 | 8 | 368 | 281 | +87 | 28 | |
| 7 | Newcastle | 22 | 11 | 0 | 11 | 281 | 281 | 0 | 22 | |
| 8 | Parramatta | 22 | 11 | 0 | 11 | 346 | 366 | -20 | 22 | |
| 9 | Canterbury-Bankstown | 22 | 10 | 2 | 10 | 280 | 337 | -57 | 22 | |
| 10 | St. George | 22 | 10 | 0 | 12 | 330 | 356 | -26 | 20 | |
| 11 | Eastern Suburbs | 22 | 9 | 1 | 12 | 348 | 346 | +2 | 19 | |
| 12 | Manly-Warringah | 22 | 9 | 1 | 12 | 334 | 343 | -9 | 19 | |
| 13 | Western Suburbs | 22 | 7 | 1 | 14 | 229 | 389 | -160 | 15 | |
| 14 | Gold Coast-Tweed | 22 | 7 | 1 | 14 | 223 | 383 | -160 | 15 | |
| 15 | North Sydney | 22 | 5 | 1 | 16 | 194 | 406 | -212 | 11 | |
| 16 | Illawarra | 22 | 2 | 1 | 19 | 256 | 503 | -247 | 5 |