John Wirth is a television showrunner, producer, and writer. From 2012 to mid-2016, he was the showrunner and executive producer for the American Western series Hell on Wheels. He is also credited as a co-creator, executive producer and writer for the Netflix series, Wu Assassins (2019). His previous producer and writer credits include such series as The Cape (2011), the V remake (2009–2011), Terminator: The Sarah Connor Chronicles (2008–2009), Love Monkey (2006), Ghost Whisperer (2005–2010), Nash Bridges (1996–2001), and Remington Steele (1982–1987).