Lumpy may refer to:
Film and television Lumpy Rutherford, a friend of Wally Cleaver in the television series Leave it to Beaver Lumpy the Heffalump, a character in Walt Disney Winnie-the-Pooh films and a television series Lumpy the cook, in the 2005 film King Kong Lumpy, a fictional moose in the American flash cartoon Happy Tree Friends Ed, in Cartoon Network's animated television series Ed, Edd n Eddy
People Hugh Brannum (1910–1987), American singer, arranger, composer and actor best known for playing "Mr. Green Jeans" on the children's television show Captain Kangaroo Tim Herron (born 1970), American golfer Lumpy Stevens (1735–1819), English cricketer
Other Lumpy Ridge, Rocky Mountain National Park, Colorado, United States TOM's Toyota LMP, a LeMans Prototype car nicknamed "Lumpy" LUMPY, original title of the 2012 film Best Man Down