William Davies (sometimes credited William Davis or Will Davies) is an English producer and screenwriter. He has written and co-written a number of films including Twins (1988), The Real McCoy (1993), Johnny English (2003), Alien Autopsy (2006), Flushed Away (2006), How to Train Your Dragon (2010), Johnny English Reborn (2011), Puss in Boots (2011), Johnny English Strikes Again (2018), and Lyle, Lyle, Crocodile (2022).