West Bromwich Albion beat Crystal Palace 2-0 today to earn promotion to the Premiership.
Wolves could only manage a 2-2 draw against lowly Sheffield Wednesday and must settle for a play-off spot.
Millwall, Birmingham and Norwich will join Wolves in the play-offs, which start next weekend.
West Brom led Wolves by a point at start of play and only a win would guarantee them promotion behind champions Manchester City.
Millwall beat Grimsby Town 3-1, Birmingham were 2-0 winners over Sheffield United, while Norwich edged out Burnley, with whom they were equal on points and goal difference at the start of play, with a 2-0 win over Stockport.
Crewe Alexandra beat Rotherham 2-0 today but are nevertheless relegated to division two with Barnsley and Stockport.