Chumley is a name which can refer to the following:
Chumley Huffington, in Yu-Gi-Oh! GX
Chumley, a walrus from the animated cartoon Tennessee Tuxedo and His Tales
Chumley, a troll from Robert Asprin's MythAdventures series
Dr. Chumley, in the play Harvey
Bernard Chumley, from the radio and TV sketch comedy show Little Britain
Donald Chumley (born 1962), American football player
Lyle Chumley, character in Under the Dome