2005–06 Eerste Divisie
The 2005–06 season of the Eerste Divisie began on August 12, 2005 and ended on April 7, 2006. The title was won by Excelsior Rotterdam. Promoted teams The following team was promoted to the Eredivisie at the end of the season: Excelsior Rotterdam (champion) Newly admitted teams These teams were relegated from the Eredivisie at the start of the season: De Graafschap (17th position, relegated through playoffs) FC Den Bosch (18th position) The following team was admitted to the Eerste Divisie at the start of the season: FC Omniworld League standings Period winners The competition is divided into six periods () of six matches each. The winner of each period () qualifies for the playoffs at the end of the season. If the winner of a period has already won a prior period in the season, the second placed team in the period is awarded the playoff slot. If the second placed team has also won a prior period, no winner is called, and the playoff slot is decided by league standing at the end of the season. If a team that has won a period goes on to win the league title and secure promotion to the Eredivisie, the