Hans Carl Gustav Wahlgren (born 26 June 1937) is a Swedish actor. He stars in the Swedish reality show Wahlgrens värld which is broadcast on Kanal 5. He voiced Charles Ingvar "Sickan" Jönssons in the computer games Jönssonligan: Jakten på Mjölner and Jönssonligan går på djupet.
Wahlgren was born in Helsingborg, Sweden. He was raised in Gothenburg. In 1962, he married actress Christina Schollin. They have four children; including singer Pernilla.