Dog is the common name for Canis lupus familiaris, the domestic dog.

Dog may also refer to

• Canidae, the dog family, canids

• Small-eared dog, Atelocynus microtis, wild canid of South America
• Raccoon dog, Nyctereutes procyonoides, wild canid of Asia
• Bush dog, Speothos venaticus, wild canid of South America
• Dhole, or Indian wild dog, Cuon alpinus, wild canid of Asia
• African hunting dog, Lycaon pictus, wild canid of Africa

• Prairie dog, Cynomys s., rodents of North America
• Dogfish, Squalidae, family of sharks

• Duane Chapman, nicknamed "Dog", star of Dog the Bounty Hunter
• He Dog, an Oglala Sioux leader
• Mary Crow Dog, Dakota author and activist
• Nate Dogg, American rapper and R&B artist
• Snoop Dogg (previously Snoop Doggy Dogg), American rapper
• Swamp Dogg, American soul artist

• Dogs (British band), punk music
• Dogs (French band), rock music
• Dogs (album), by American singer-songwriter Nina Nastasia
• Dogs (Pink Floyd song), a song by Pink Floyd
• Dogs (The Who song), single recorded by The Who

• Digital on-screen graphic
• Dog (film), the 2001 animated short film by Suzie Templeton
• A Dog's Breakfast, a 2006 independent film
• Dog (Half-Life 2), a character from the video game Half-Life 2
• Dog the Bounty Hunter, a reality television show
• Dogs: Bullets & Carnage, a manga by Shirow Miwa
• "Dogged", an episode of Power Rangers: SPD
• Dog, a character in Lock, Stock and Two Smoking Barrels

• Dog Island (Florida), a barrier island in the Gulf of Mexico
• Isle of Dogs, a peninsula in East London
• Dog River (further disambiguation)

• Dog (zodiac), a Chinese astrological sign
• Dog (engineering), a tool that prevents or imparts movement by offering physical engagement of some kind
• Difference of Gaussians
• Deployable Operations Group, U.S. Coast Guard command
• In some spelling alphabets, the name for the letter "D".
• Newcastle Brown Ale, a brand of dark brown beer, nicknamed "Dog"
• Andiron, also known as a "dog" or "dog iron"
• "Big dog" and "small dog", non-standard hands in the card game poker
• Petz, a series of games, including one called Dogz
• Underdog (competition), a person or group in a competition who is popularly expected to lose
• Hurricane Dog, used to name three tropical cyclones in 1950, 1951 and 1952 (further disambiguation)
• Dawg, various slang expressions (further disambiguation)
• Doggy style, a sex position, refers to the initial position assumed by dogs when mating
• Writing of poor literary quality
  • Dog Latin
  • doggerel
• Bulldogs Rugby League Football Club, an Australian football club nicknamed "Doggies"

• The Dog (disambiguation), includes The Dogs
• Sleeping Dogs