Lennart Green (born December 25, 1941) is a world champion close-up/card magician, a title which he won in 1991 at the FISM convention in Lausanne, Switzerland. He is known for his seemingly chaotic routines which, in spite of first appearances, display great skill. His original techniques and presentation style form an unorthodox and innovative contribution to sleight of hand magic.
Green competed at the 1988 FISM convention in The Hague, Netherlands, and was erroneously disqualified because the judges incorrectly believed he had used stooges in his act to shuffle the cards. In 1991, he performed the same act but insisted that the judges themselves shuffle the cards to prove that he used no stooges. The judges then awarded him first place.