Marjorie Lord (née Wollenberg) was an American television and film actress. She played Kathy "Clancy" O'Hara Williams, opposite Danny Thomas's character on The Danny Thomas Show and later Make Room for Granddaddy.

In 1935, at the age of 16, Lord made her Broadway debut in The Old Maid with Judith Anderson. Her other Broadway appearances came in Signature, Little Brown Jug, and The Girl in the Freudian Slip.