The 1905–06 Panhellenic Championship was the first organised association football competition to take place in mainland Greece. It took place in March 1906. It was not organised by the HFF and as such it is not recognised by it.
Source: RSSSF, Greek Wikipedia
Rules for classification: 1) points; 2) goal difference; 3) number of goals scored (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.