Mark Steyn is a Canadian author and cultural commentator. He has written several books, including The New York Times bestsellers America Alone, After America, and Broadway Babies Say Goodnight.

In the US, he has been a regular guest host of the nationally syndicated Rush Limbaugh Show and Tucker Carlson Tonight on Fox News, where he regularly appeared as a guest and fill-in host.

In 2021, Steyn began hosting his own show on the British news channel GB News. He left GB News in early February 2023, stating that the channel wanted him to pay fines issued by the UK media regulator Ofcom, which was investigating complaints of COVID-19 vaccination skepticism aired on The Mark Steyn Show. He has since moved his show to his own website.