- Source: List of Portuguese football transfers summer 2009
- List of Portuguese football transfers summer 2009
- List of Portuguese football transfers winter 2009–10
- List of most expensive association football transfers
- List of German football transfers summer 2009
- List of Italian football transfers summer 2009 (July)
- List of Portuguese football transfers summer 2010
- List of Azerbaijan football transfers summer 2009
- List of Slovenian football transfers summer 2009
- List of 2009–10 Portuguese Liga transfers
- List of Italian football transfers summer 2008 (July)
This is a list of Portuguese football transfers for the summer of 2009. The summer transfer window opened on 1 July and closed at midnight on 31 August. Players may have been bought before the transfer windows opens, but may only joined their new club on 1 July. Only moves involving Primeira Liga clubs are listed. Additionally, players without a club may join a club at any time.
Transfers
^1 A player who signed with a club before the opening of the summer transfer window, will officially join his new club on 1 July. While a player who joined a club after 1 July will join his new club following his signature of the contract.