Blue Tongue or bluetongue may refer to:
Blue-tongued skink, a genus of lizards Bluetongue disease, in ruminants Bluetongue virus, cause of the disease Blue Tongue Entertainment - an Australian video game developer Blue Tongue bush or Straits Rhododendron, Melastoma polyanthum Bluetongue Brewery, a defunct Australian brewery Blue-Tongue Films, an Australian film collective/production company