Only transfers involving a team from the Jupiler League are listed.
The winter transfer window opens on 1 January 2010, although a few transfers may take place prior to that date.
The window closes at midnight on 1 February 2010.
Players without a club may join one, either during or in between transfer windows.
As of 1 January 2010, they returned to their original club and are listed here.
For a list of players on loan during the last year, see List of Belgian football transfers winter 2008–09 and summer 2009.
Note: because Mouscron was declared bankrupt on 28 December 2009, all players were released as their contracts were terminated.
[7] Berthelin was signed before the bankruptcy, but also released.