Rauli Somerjoki (born Rauli Aarre Tapani Somerjoki; August 30, 1947 – January 14, 1987), known professionally as "Badding", was a Finnish rock singer born in the town of Somero into a family of five children.

He and M. A. Numminen caused a major scandal in 1966 with provocative songs like "Mitä nuoren aviomiehen tulee muistaa" ('What Young Husbands Should Remember') and "Jenkka ulkosynnyttimistä" ('Vulva Jenkka'), whose performance resulted in the interruption of the concert by the police although the lyrics were simply texts from factual books on marriage and sexuality available in public libraries.

[1] Badding's most famous songs include "Fiilaten ja höyläten" (originally Reelin' and Rockin' by Chuck Berry); "Paratiisi" ('Paradise', a song composed by Badding himself and the lyrics written together with Arja Tiainen); "Bensaa suonissa" ('Gasoline in the veins', composed by Badding himself, with lyrics written by Jarkko Laine); "Ikkunaprinsessa" ('Window Princess', originally Glendora); "Tähdet, tähdet" ('Stars, Stars', a song made by Somerjoki himself); and "Laivat" ('Ships', 'Parakhody', originally a Russian popular song).

Aki Kaurismäki has used Somerjoki's music in his films and published a biography of Somerjoki titled Badding: Rauli Somerjoen elämä ja laulut (1996) written by Heikki Metsämäki and Juha Miettinen.

In 2000 Markku Pölönen directed the film Badding, starring Janne Reinikainen about Somerjoki's life.