Brett Halliday (July 31, 1904 – February 4, 1977) is the primary pen name of Davis Dresser, an American mystery and western writer.
Halliday is best known for the long-lived series of Michael Shayne mysteries he wrote and later commissioned others to write.
Dresser wrote westerns, non-series mysteries, and romances under the names Asa Baker, Matthew Blood, Kathryn Culver, Don Davis, Hal Debrett, Anthony Scott, Peter Field, and Anderson Wayne.