John Halliday was an American actor of stage and screen, who often played suave aristocrats and foreigners.

Millie is a 1931 American pre-Code drama film directed by John Francis Dillon from a screenplay by Charles Kenyon and Ralph Morgan, based on a novel of the same name by Donald Henderson Clarke. The film was an independent production by Charles R. Rogers, distributed by RKO Radio Pictures, after their acquisition of Pathé Exchange. It stars Helen Twelvetrees in one of her best roles, with a supporting cast that includes Lilyan Tashman, James Hall, Joan Blondell, John Halliday and Anita Louise.