The 2009 Suwon Samsung Bluewings season was the Suwon Samsung Bluewings' fourteenth season in the South Korean K-League.

The club participated in the K-League, League Cup, Korean FA Cup, Pan-Pacific Championship and the Champions League as the winners of the previous year's K-League.

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Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Players may hold more than one non-FIFA nationality.