Derek Kolstad is an American writer known for his work on John Wick (2014) and John Wick: Chapter 2 (2017). Apart from the Keanu Reeves starrer, Kolstad also rewrote the Dolph Lundgren action movie One in the Chamber (2012). He was the writer for the Steve Austin and Dolph Lundgren starrer, The Package (2013). His 2019 release includes John Wick: Chapter 3 - Parabellum. His 2021 release includes Nobody.