Justin Geever (born February 21, 1978) is the guitarist and singer/songwriter (along with bassist Chris Barker) of the political punk-rock band Anti-Flag. He plays LesPaul-type ESP/LTD guitars and is a vegetarian and animal rights advocate.

Justin Geever, also known as Justin Sane (born February 21, 1973) is the guitarist and co-singer\songwriter (along with bassist Chris Barker) of the political punk-rock band Anti-Flag. Sane was the youngest of nine kids and grew up in poverty. Despite his family’s struggle he cites his parents as one of his inspirations. They opened the first vegetarian restaurant in Pittsburgh, inspiring Justin to become a vegetarian which he is to this day. As a kid he saw his parents participate in rallies.