Around the world, Tiainen (Tiainen 
) is a very rare male forename. The first name Tiainen is habitual in Eastern Asia, particularly China, where it is an extremely rare boy's name. Predominantly, Tiainen is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Tiainen | Australia, Estonia, Finland, Sweden, United States |
|
arto tiainen Finnish cross-country skier and politician, FI (b. 1930) |
|
|
petri tiainen Finnish musician, FI (b. 1973) |
|
| petri tiainen Finnish footballer, FI (b. 1966) |
|
|
| hanna tiainen researcher (b. 1983) |
|
Mr, Sami, Samu, Satu, Saku, Sini, Simo, Suvi, Sole, Alli, Anna, Anne, Anni, Annu, Anja, Arto, Arja, Aksu, Aino, Aija, Aune, Auli, Sari, Sara, Miia, Miko, Ms, Mia, Anu, Ari, Aki, Kai, Kht, Pia, Pã, Tea, Aaro, Nea, Epe, Ira, Ida, Mari, Mark, Make, Meri, Mira, Miro, Mika, Esa, and Beda