Katherine Elizabeth Callan (née Borman) (born January 9, 1936)[1] is an American actress and writer using the variation K Callan, known for playing Clark Kent's mother Martha in the ABC television series Lois & Clark: The New Adventures of Superman.

She has most recently appeared as Elizabeth, the mother of John the Baptist, in the Christian historical drama The Chosen.

She played Daisy LaRue in the TV show Meet the Browns and appeared as Mrs. Monroe, Gabe Duncan's teacher, in Good Luck Charlie.

She appeared in the films Joe (1970), A Touch of Class (1973), The Onion Field (1979), American Gigolo (1980), A Change of Seasons (1980), Fast-Walking (1982), and Knives Out (2019), as well as the 1972 television adaptation of the 1966 Lanford Wilson play The Rimers of Eldritch.

Callan made TV commercials for products, including Anacin, Endust, Geritol, and Sanka.