Ian Oswald Guinness (born September 30, 1941) is an English author, theologian and social critic now based in Fairfax County, Virginia; he has lived in the United States since 1984.

[4] According to his website, Os has written or edited more than 30 books that offer insight into current cultural, political, and social contexts.

[citation needed] In the late 1960s, Guinness was a leader at the L'Abri community in Switzerland and, after Oxford, a freelance reporter for the BBC.[when?

][5] He wrote his first book, The Dust of Death, in 1973; John Frame called it "a wonderfully erudite and persuasive critique of the western culture of the late 1960s from a thoughtful, balanced Christian perspective.

and was the leading drafter of the Williamsburg Charter, a bicentennial clarification and reaffirmation of the religious liberty clauses of the first amendment.