During the 2005–06 English football season, Portsmouth competed in the FA Premier League. It was Portsmouth's third consecutive season in English football's top-flight.

Manager Alain Perrin was sacked in November with Portsmouth struggling in the relegation zone. He was replaced by Harry Redknapp, who had walked out of arch-rivals Southampton after being refused permission by the club to talk to Portsmouth about the managerial vacancy. For a while it looked as if Redknapp's efforts were in vain, with Portsmouth eight points adrift of safety at the end of February. However, by the end of March that had been cut to just three (with a game in hand over seventeenth-placed West Bromwich Albion) and eventually Portsmouth managed to secure survival with a 2-1 win at Wigan Athletic to send West Brom and Birmingham City down.

Portsmouth signed a deal with Jako to produce the club's kit. Oki became the kit sponsors.

Source: Barclays Premier League
Rules for classification: 1) points; 2) goal difference; 3) number of goals scored
For further information on European qualification see Premier League – Qualification for European competitions.
(C) = Champion; (R) = Relegated; (P) = Promoted; (E) = Eliminated; (O) = Play-off winner; (A) = Advances to a further round.
Only applicable when the season is not finished:
(Q) = Qualified to the phase of tournament indicated; (TQ) = Qualified to tournament, but not yet to the particular phase indicated; (RQ) = Qualified to the relegation tournament indicated; (DQ) = Disqualified from tournament.

P = Matches played; W = Matches won; D = Matches drawn; L = Matches lost; F = Goals for; A = Goals against; GD = Goal difference; Pts = Points

^1.Liverpool had already qualified for the Champions League by league position, as a result, their UEFA Cup berth that they earned through winning the 2005–06 FA Cup, went to West Ham, who were FA Cup runners-up.

...
Wikipedia