Naga Viper - 1,382,118 Scovilles. The Naga Viper (capsicum chinense) has been rated at 1,382,118 Scoville Heat Units (SHU), according to tests conducted by the Warwick HRI Mineral Analysis Laboratory, UK, in November 2010.
Trinidad Scorpion Butch T. 1,463,700 Scoville Units. The "scorpion" peppers are referred to as such because the pointed end of the pepper is said to resemble a scorpion's stinger. The Trinidad Scorpion Butch T variety pepper was formerly ranked as the hottest pepper in the world, but lost that tile to the Trinidad Moruga Scorpion as of February 2012.