Charles Stewart Almon Ritchie, CC (September 23, 1906 – June 7, 1995) was a Canadian diplomat and diarist.
Born in Halifax, Nova Scotia, Ritchie was educated at the University of King's College, in Halifax, Nova Scotia, Pembroke College, Oxford, Harvard University, and École Libre des Sciences Politiques.
[2] While Ritchie's career as a diplomat marked him as an important person in the history of Canadian foreign relations, he became famous through the publication of his diaries, first The Siren Years, and then three follow-ups.
The diaries document both his diplomatic career and his private life, including the beginning of his long love affair with the Anglo-Irish writer Elizabeth Bowen, which began in 1941 when he was still single and she married, survived through his marriage in 1948 and long periods of separation, lasting until Bowen's death in 1973.
His brother, Roland Ritchie, continuing a family tradition in the law, was a puisne justice of the Supreme Court of Canada.