McClelland Barclay (1891 – 18 July 1943) was an American illustrator. By the age of 21, Barclay's work had been published in The Saturday Evening Post, Ladies' Home Journal, and Cosmopolitan. He was commissioned as a lieutenant in the Naval Reserve in 1938 and following the Japanese attack on Pearl Harbor he went on active duty. At the time of his death, in 1943, he was a Lt. Commander.