Caroline Alice (C. A.) Lejeune (1897–1973) was a British writer, best known as the film critic of The Observer from 1928 to 1960.
C. A. Lejeune was the youngest child in a large Victorian family that resided at 10, Wilmslow Road, Withington, Manchester. Her father was a Swiss cotton merchant who had come to England after doing business in Frankfurt. Her mother, Louisa, who was the daughter of the Nonconformist minister Dr Alexander Maclaren, was a friend of C. P. Scott and of Caroline Herford, who was Caroline's godmother and Headmistress of Lady Barn House School, where Caroline received her elementary education. She and four of her sisters (Franziska, Marion, Juliet and Hélène) received their secondary education at Withington Girls' School, of which their mother, Scott, and Caroline Herford were among the founders.
After leaving school Caroline turned down the opportunity to go to the University of Oxford and went instead to the University of Manchester, where she studied English language and literature.
Partly through her mother's friendship with Scott Caroline found work writing for the Manchester Guardian (now The Guardian), initially as a music critic. Her main interests were in Gilbert and Sullivan, Verdi, and Puccini. However, she was increasingly excited by the new medium of the cinema.
In 1921 she moved to London and in 1922 she began writing a column for the paper called "The Week on the Screen". In 1925 she married Edward Rolfe Thompson, later editor of John Bull, and moved to Pinner Hill, Middlesex. In 1928 she left the Manchester Guardian for The Observer (which then had no connection with the Guardian group), where she remained for the next 32 years, although she also contributed to publications as diverse as The New York Times and Farmers' Weekly. She also wrote an early book on the subject of Cinema (1931), and her film reviews are anthologised in Chestnuts in her Lap (1947) and posthumously in The C. A. Lejeune Film Reader, edited by her son Anthony Lejeune (1991).