Christopher Markus and Stephen McFeely are a duo of American screenwriters and producers. They are known for their work in the Marvel Cinematic Universe, having written the three Captain America films (The First Avenger, The Winter Soldier, and Civil War), Thor: The Dark World, and the upcoming two-part event film Avengers: Infinity War; and having created the Agent Carter TV series. They are also the screenwriters of The Chronicles of Narnia film franchise.
They made their screenwriting debut in 2004 with The Life and Death of Peter Sellers, for which they won a Primetime Emmy Award for Outstanding Writing for a Miniseries, Movie or a Dramatic Special. They also wrote the films You Kill Me and Pain & Gain.