List of number-one singles of 2009 (Finland)

This is the complete list of (physical and digital) number-one singles sold in Finland in 2009 according to the Official Finnish Charts. The list on the left side of the box (Suomen virallinen singlelista, "Official Finnish Singles Chart") represents both physical and digital track sales and the one on the right side (Suomen virallinen latauslista, "Official Finnish Download Chart") represents sales of digital tracks.