2009–10 Millwall F.C. season
| 2009–10 season | |||
|---|---|---|---|
| Chairman | John Berylson | ||
| Manager | Kenny Jackett | ||
| League One | 3rd (promoted via play-offs) | ||
| FA Cup | 2nd round | ||
| Carling Cup | 3rd round | ||
| Top goalscorer | League: Steve Morison (21) All: Steve Morison (23) | ||
| Highest home attendance | 17,632 vs Charlton Athletic (13 March 2010) | ||
| Lowest home attendance | 6,617 vs Yeovil Town (29 September 2009) | ||
| Average home league attendance | 10,834 | ||
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The 2009–10 Football League One season saw Millwall promoted back to The Championship via the Play-offs, after finishing 3rd in the table. Millwall celebrated their 125th anniversary this season. It was the club's 84th continuous season in the Football League and 41st in the third tier.