"Wetsuit / Tiger Blood" is a single from London-based quartet The Vaccines from their debut album, What Did You Expect from The Vaccines?. The single was released in the United Kingdom as a digital download on 11 December 2011. It was also released as on 7" vinyl limited to 500 copies. The single debuted at number 164 on the UK Singles Chart.

A wetsuit is a garment, usually made of foamed neoprene, which is worn by surfers, divers, windsurfers, canoeists, and others engaged in water sports, providing thermal insulation, abrasion resistance and buoyancy. The insulation properties depend on bubbles of gas enclosed within the material, which reduce its ability to conduct heat. The bubbles also give the wetsuit a low density, providing buoyancy in water.