Frank Lenord Clayman Cook (January 6, 1942 – July 9, 2021) was an American drummer and member of blues bands Canned Heat, Pacific Gas & Electric and Bluesberry Jam. For a time he was also the manager of Pacific Gas & Electric.

Having a background in jazz, Frank Cook was an experienced musician who played with jazz musicians Charlie Haden, Chet Baker and Elmo Hope. He also had been in collaborations with soul artists such as Shirley Ellis and Dobie Gray. Cook became a member of Canned Heat when he replaced their drummer Ron Holmes.