| Club: | Sheffield Wednesday |
| Season: | 1989–90 |
| Manager: | Ron Atkinson |
| Stadium: | Hillsborough Stadium |
| League: | First Division |
| League Result: | 18th (relegated) |
| Cup1: | FA Cup |
| Cup1 Result: | Fourth round |
| Cup2: | League Cup |
| Cup2 Result: | Third round |
| Cup3: | Full Members' Cup |
| Cup3 Result: | Third round |
| League Topscorer: | David Hirst (14) |
| Season Topscorer: | David Hirst (16) |
| Prevseason: | 1988–89 |
| Nextseason: | 1990–91 |
The 1989–90 season was Sheffield Wednesday's 88th season in the Football League, and their sixth consecutive season in the Football League First Division, the top tier of English football, where they finished 18th and were relegated to the Second Division. The club also participated in the FA Cup and Football League Cup, being eliminated in the fourth round of the former and the third round of the latter.
Squad at end of season.[1]
See main article: 1989–90 Football League First Division.
| Norwich City | H | 0–2 | 19,142 | |||
| Luton Town | A | 0–2 | 9,503 | |||
| Chelsea | A | 0–4 | 16,265 | |||
| Everton | H | 1–1 | Atkinson | 19,657 | ||
| Arsenal | A | 0–5 | 30,058 | |||
| Aston Villa | H | 1–0 | Atkinson | 17,509 | ||
| Millwall | A | 0–2 | 11,287 | |||
| Coventry City | H | 0–0 | 15,054 | |||
| Manchester United | A | 0–0 | 41,492 | |||
| Tottenham Hotspur | A | 0–3 | 26,909 | |||
| Wimbledon | H | 0–1 | 13,728 | |||
| Nottingham Forest | A | 1–0 | Wilson (o.g.) | 21,864 | ||
| Charlton Athletic | H | 3–0 | Atkinson, Hirst (2) | 16,740 | ||
| Derby County | A | 0–2 | 18,085 | |||
| Crystal Palace | H | 2–2 | Whitton, Hirst (pen.) | 17,227 | ||
| Liverpool | H | 2–0 | Hirst, Atkinson | 32,732 | ||
| Norwich City | A | 1–2 | Hirst | 15,341 | ||
| Luton Town | H | 1–1 | Dreyer (o.g.) | 16,339 | ||
| Queens Park Rangers | H | 2–0 | Atkinson, Hirst | 14,569 | ||
| Liverpool | A | 1–2 | Atkinson | 37,488 | ||
| Southampton | A | 2–2 | Atkinson, Shirtliff | 16,417 | ||
| Manchester City | H | 2–0 | Hirst, Pearson | 28,756 | ||
| Chelsea | H | 1–1 | Atkinson | 18,042 | ||
| Everton | A | 0–2 | 25,545 | |||
| Millwall | H | 1–1 | Hirst | 17,737 | ||
| Aston Villa | A | 0–1 | 27,168 | |||
| Arsenal | H | 1–0 | Bould (o.g.) | 20,640 | ||
| Crystal Palace | A | 1–1 | Worthington | 11,857 | ||
| Derby County | H | 1–0 | Sheridan | 21,811 | ||
| Coventry City | A | 4–1 | Hirst, Worthington, Sheridan, Atkinson | 13,339 | ||
| Manchester United | H | 1–0 | Hirst | 33,260 | ||
| Wimbledon | A | 1–1 | Shirtliff | 5,034 | ||
| Tottenham Hotspur | H | 2–4 | Hirst, Atkinson | 26,582 | ||
| Southampton | H | 0–1 | 18,329 | |||
| Manchester City | A | 1–2 | Hirst | 33,022 | ||
| Queens Park Rangers | A | 0–1 | 10,448 | |||
| Charlton Athletic | A | 2–1 | Hirst (2) | 7,029 | ||
| Nottingham Forest | H | 0–3 | 29,762 |
See main article: 1989–90 FA Cup.
| Third round | Wolverhampton Wanderers | A | 2–1 | Shirtliff, Atkinson | 23,800 | ||
| Fourth round | Everton | H | 1–2 | Hirst | 31,754 |
See main article: 1989–90 Football League Cup.
| Second round, first leg | Aldershot | H | 0–0 | 9,237 | |||
| Second round, second leg | Aldershot | A | 8–0 | Whitton (4), Atkinson (3), Shakespeare | 4,011 | ||
| Third round | Derby County | A | 1–2 | Hirst (pen.) | 18,042 |
See main article: 1989–90 Full Members' Cup.
| Second round | Sheffield United | H | 3–2 | Atkinson, Palmer, Sheridan | 30,464 | ||
| Third round | Middlesbrough | A | 1–4 | Bennett | 8,716 |