Around the world, Siivonen (Siivonen 
) is an extremely rare unknown gender forename. Much more frequently, Siivonen is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Siivonen | Canada, Estonia, Finland, Sweden, United States |
| vesa siivonen Finnish long-distance runner and middle-distance runner, FI (b. 1963) |
|
|
| petri siivonen FI |
|
Mr, Juha, Jyri, Tomi, Toni, Tero, Troy, Timo, Tiia, Niko, Nina, Nora, Emma, Eila, Eero, Eetu, Eeva, Hely, Vesa, Iida, Iiro, Olga, Jere, John, Jari, Jani, Ms, Mia, Anu, Kai, Nea, Htm, Ode, Mari, Milo, Miro, Olli, Mika, Suvi, Anna, Anne, Anni, Kari, Pyry, Rami, Roni, Riku, Gail, Sari, and Maria