Myrmecia tridentata is an Australian ant which belongs to the Myrmecia genus. It is native to Australia. They have been usually spotted in South Australia, Victoria, and Queensland. It was described by Ogata & Taylor in 1991. Most of the colour on Myrmecia tridentata is a light brown colour. The abdomen however is a black colour, and the mandibles are of a yellow colour. Antennae and legs are exactly the same colour as most of the body.