Josie & Jack is a 2019 American tragedy film directed by Sarah Lancaster and starring Olivia DeJonge and Alex Neustaedter. It is based on Kelly Braffet's 2005 novel of the same name. It is also Lancaster's directorial debut.

Seventeen-year old Josie, and her older brother Jack, are homeschooled and raised by their abusive alcoholic physics professor father, but they dream of escaping their life of bleak isolation.

The film was shot in Staten Island.