Jonna, also known as Jonna Marika Pirinen, is a Finnish pop and R&B singer. She first appears in the Finnish Popstar contest as a member of the first band formed in the format, but leaves the group before it becomes Gimmel. She then starts a solo career and chooses to record the R&B music she prefers.

Her first album, Kaksnolla, appears in 2003 and is described as an early Finnish R&B release. Its first single, Tyytyväinen, stays in the Finnish official singles chart for months. Her best-known songs include Tyytyväinen, Kaikki Talossa, Sateen Jälkeen and Jäässä.

After spending time in the United States, she returns to Finland and takes part in the Finnish preselection for the Eurovision Song Contest in 2011 with the self-written song Puppets.