Dog's balls or dog's bollocks may refer to:

The testicles of a dog Grewia retusifolia, a shrub species in the family Malvaceae Dog's bollocks, a slang expression in British English Dog's bollocks (typography), an outdated construction in British English Dog-balls, in golf, a score of eight on a single hole Dog Balls, a character in the 2006 Chinese film Trouble Makers