Carl Gustaf Christer Pettersson was a Swedish criminal who was a suspect in the 1986 assassination of Olof Palme, the Prime Minister of Sweden. In 1989 he was convicted of the murder in district court but acquitted on appeal the following year.

On 28 February 1986, at 23:21 CET, Olof Palme, Prime Minister of Sweden, was fatally wounded by a single gunshot while walking home from a cinema with his wife Lisbeth Palme on the central Stockholm street Sveavägen. Lisbeth Palme was slightly wounded by a second shot. The couple did not have bodyguards with them.