Anna Boden and Ryan K. Fleck are an American filmmaking duo. The duo rose to prominence for their work on the 2004 short film Gowanus, Brooklyn, which earned the Grand Jury prize at the Sundance Film Festival. They went on to collaborate on the Academy Award-nominated film Half Nelson. Their film Sugar (2008) was honored as one of the Top 10 for 2009 at the American Film Institute Awards; and one of the Top Independent Films at the National Board of Review Awards 2009. They are best known for writing and directing Captain Marvel, which grossed over $1 billion and is one of the highest-grossing films of all time; which made Boden the first woman to direct a live-action movie that has grossed $1 billion.

Half Nelson is a 2006 American drama film directed by Ryan Fleck and written by Fleck and Anna Boden. The film stars Ryan Gosling, Shareeka Epps and Anthony Mackie. It was scored by Canadian band Broken Social Scene. 26-year-old Gosling was nominated for the Academy Award for Best Actor for his performance, becoming the seventh-youngest nominee in the category.