Wild dog is a term broadly applied to canines that are either not domesticated or not owned.

Wild dog may also refer to:

• Feral dog, domestic dogs living as wild animals
• Dingo, or Australian wild dog, a free-ranging dog found in Australia
• African wild dog, or African hunting dog, wild canine of Africa
• Asiatic wild dog, or dhole, wild canine of Asia
• Wild Dog (album), a 2012 album by Susanna, also known as Susanna and the Magical Orchestra
• Wild Dog (comics), a fictional vigilante appearing in DC comics
• Wild Dog (film), an Indian Telugu-language film
• Wild Dog (Time Crisis), a villain in the Time Crisis series of video games