Iina Kuustonen (born 18 April 1984 in Helsinki) is a Finnish actress.
Kuustonen is most famous for her appearances in the Finnish television series Putous (2011-2014), Helsingin herra (2012) and Syke (2014). She has also played in several movies, including The Kiss of Evil (2011) and FC Venus (2005). She won the Kultainen Venla, "Golden Venla" award for best actress for her roles in Helsingin Herra and Putous in 2012.