| Year: | 1983 |
| League: | NSWRFL |
| League Rank: | 9th |
| Cup: | Challenge Cup |
| League Wins: | 12 |
| League Draws: | 0 |
| League Losses: | 14 |
| Points For: | 450 (77 tries, 70 goals, 2 field goals) |
| Points Against: | 520 (85 tries, 88 goals, 4 field goals) |
| Ceo Title: | CEO |
| Coach: | Terry Fearnley |
| Captain: | Gavin Miller |
| Stadium: | Endeavour Field |
| Avg Attendance: | 4,014 |
| Top Tries: | Chris Gardner (17) |
| Top Goals: | Dane Sorensen (48) |
| Top Points: | Dane Sorensen (104) |
| Prev Season: | 1982 |
| Next Season: | 1984 |
The 1983 Cronulla-Sutherland Sharks season was the seventeenth in the club's history. Coached by Terry Fearnley and captained by Gavin Miller, they competed in the NSWRFL's 1983 Winfield Cup premiership. Finishing the regular season 9th (out of 14), the Sharks failed to reach the finals for the second consecutive year. The club also competed in the 1983 KB Cup, in which they reached the final.
Miller was the only Sharks player selected for representative football this season, playing for New South Wales in the 1983 State of Origin series.
| width=20 abbr="Position×" | width=175 | Team | width=20 abbr="Played" | Pld | width=20 abbr="Won" | W | width=20 abbr="Drawn" | D | width=20 abbr="Lost" | L | width=20 abbr="Points for" | PF | width=20 abbr="Points against" | PA | width=20 abbr="Points difference" | PD | width=20 abbr="Points" | Pts | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Manly-Warringah | 26 | 22 | 0 | 4 | 690 | 361 | +329 | 44 | ||||||||||
| 2 | Parramatta | 26 | 18 | 0 | 8 | 639 | 293 | +346 | 36 | ||||||||||
| 3 | Canterbury-Bankstown | 26 | 18 | 0 | 8 | 531 | 409 | +122 | 36 | ||||||||||
| 4 | Balmain | 26 | 17 | 0 | 9 | 525 | 438 | +87 | 34 | ||||||||||
| 5 | St. George | 26 | 14 | 1 | 11 | 551 | 450 | +101 | 29 | ||||||||||
| 6 | Eastern Suburbs | 26 | 14 | 1 | 11 | 579 | 492 | +87 | 29 | ||||||||||
| 7 | North Sydney | 26 | 13 | 1 | 12 | 435 | 446 | -11 | 27 | ||||||||||
| 8 | South Sydney | 26 | 12 | 1 | 13 | 439 | 495 | -56 | 25 | ||||||||||
| 9 | Cronulla-Sutherland | 26 | 12 | 0 | 14 | 450 | 520 | -70 | 24 | ||||||||||
| 10 | Canberra | 26 | 9 | 0 | 17 | 495 | 614 | -119 | 18 | ||||||||||
| 11 | Penrith | 26 | 9 | 0 | 17 | 476 | 647 | -171 | 18 | ||||||||||
| 12 | Illawarra | 26 | 8 | 0 | 18 | 451 | 644 | -193 | 16 | ||||||||||
| 13 | Newtown | 26 | 7 | 2 | 17 | 373 | 591 | -218 | 16 | ||||||||||
| 14 | Western Suburbs | 26 | 5 | 2 | 19 | 394 | 628 | -234 | 12 | ||||||||||