Frank Robinson Walker (July 11, 1899 – December 25, 1976) was an officer in the United States Navy during World War II, most notably during the Solomon Islands campaign between 1942 and 1943.

Walker became acquainted with Doris Adele Carpenter through her brother-in-law Russell Groesbeck Sturges who was a Naval Academy classmate of his.

In early 1942, Walker was assigned command of Destroyer Division 8 in the Southwest Pacific area, later leading screening and reconnaissance operation shortly before the landings at Guadalcanal and Tulagi on August 7, 1942.

Walker would take part in the Battle of Savo Island during the night of August 8–9, where Japanese naval forces sank one Australian and three American cruisers suffering minimal casualties.

Appointed commander of Roosevelt Base and Small Craft Training Center at San Pedro (now part of Los Angeles, California) the following year.