Pauli Hanhiniemi (born 1964) is a Finnish singer, songwriter (composer and lyricist) and musician, who was born in Alavus. Starting his career in 1982, he formed the famous Finnish rock band Kolmas Nainen in 1982. After the break-up of the band in 1994, he formed Pauli Hanhiniemen Perunateatteri that performed until 2005. He later joined Hehkumo, a band with more traditional sound. In 2009, the highly popular Kolmas Nainen returned with two new studio albums and great commercial success.

Hanhiniemi, a prolific singer, songwriter has been involved in writing songs for his own bands, Kolmas Nainen, Pauli Hanhiniemen Perunateatteri, Hehkumo, as well as many other Finnish musical acts such as Edu Kettunen, Juliet Jonesin Sydän, Kerkko Koskinen, Anna Eriksson, Hauli Bros amongst others. For a comprehensive list, refer to fi:Luettelo Pauli Hanhiniemen kappaleista

Hanhiniemi has also appeared as an actor in television and film productions, such as in the 2014 Finnish fantasy film Anselmi: The Young Werewolf.