Catherine Elizabeth Cooke (May 5, 1924 – August 13, 2024) was an American designer principally known for her jewelry.

[2][15] Early in her career, Cooke designed furniture and household articles as well handbags, belts and jewelry.

Her first store-front was a small house on Tyson Street in Mount Vernon in Baltimore, where she lived.

[4] She and her partner Bill Steinmetz restored it for use as a house and shop and established a design consultancy there.

[18] Although she is widely read in the areas of art and design, Betty Cooke is largely self-trained.

Cooke has designed jewelry for Kirk Stieff and for Geoffrey Beene's shows in New York and Milan.

[22] Much of Cooke's work incorporates diamonds, gold, and pearls, and she has won awards for her diamond pieces in competitions sponsored by the De Beers Consolidated Mines, now the De Beers Group.