Tapani is a male given name common in Finland equivalent the name of Stephen.
As of 2013 there were more than 150,000 people with this name in Finland.
[1] A variant of Tapani is Tahvo.
The name Teppo is a diminutive of Tapani.
[2] It is listed by the Finnish Population Register Centre as one of the top 10 most popular male given names ever.