No. While many Mormon's thoroughly enjoy the pleasant "chillax" sounds of Jack Johnson, his lyrics in songs such as "Never Know", "It's all understood", and "Sleep through the static" reflect ideas that are much more liberal and somewhat anti western / organized religion... suggesting that Mormonism is probably the last religion Jack Johnson would associate himself with. This should not be construed to mean that he holds any ill-will or contempt toward Mormons or the church, as his songs also reflect peace and tolerance.
No. Jack Johnson is not a member of the Church of Jesus Christ of Latter Day Saints (commonly called the "Mormon" Church). He doesn't belong to any organized religion but is a spiritual person. About religion, he said "The line about God wearing camouflage you can read as God is in everything. The idea of camouflage, he's blending in, he's always all around. It's a little biting, 'God wears camouflage and drives a Dodge', but at the same time, you really can't argue against any of the stuff. None of it is untrue if you believe in any form of God, whether you want to call it nature or the guy with the grey beard."
The quote comes from http://www.huckmagazine.com/features/jack-johnson/
Jack Arthur Johnson is a famous american boxer
Jack Hody Johnson is his birth name.
Jack Johnson's net worth is about 16 million.
Bubbly Toes by Jack Johnson
Kim Johnson.
Jack Johnson - musician - was born on 1975-05-18.
Jack Johnson's (the musician) parents names are Jeff and Patti Johnson
Rick Johnson - musician - was born in 1980.
Eddie Johnson - musician - was born in 1920.
Eddie Johnson - musician - died in 2010.
Otis Johnson - musician - died in 1994.
Larry Johnson - musician - was born in 1938.
Nathan Johnson - musician - was born in 1976.
Al Johnson - musician - was born in 1948.
Graham Johnson - musician - was born in 1950.
Otis Johnson - musician - was born in 1910.
Calvin Johnson - musician - was born on 1962-11-01.