Big Shark is a 2023 American comedy-horror film written, directed and produced by Tommy Wiseau, and starring Wiseau, Isaiah LaBorde and Mark Valeriano as three firefighters who must save New Orleans from a killer shark.The film had its world premiere on April 2, 2023, at Cinema 21 in Portland, Oregon, and was taken on a limited US roadshow to New Orleans, San Francisco, Los Angeles, San Diego and New York City, and internationally to London, UK.