The third eye is an invisible eye, usually depicted as located on the forehead, which provides perception beyond ordinary sight. In Hinduism, the third eye refers to the ajna chakra. In both Hinduism and Buddhism, the third eye is said to be located around the middle of the forehead, slightly above the junction of the eyebrows, representing the enlightenment one achieves through meditation.
Shiva head showing a third eye
Buddha with an urna.
Ajna, brow or third eye chakra, is the sixth primary chakra in the body according to Hindu tradition and signifies the unconscious mind, the direct link to Brahman. The third eye is said to connect people to their intuition, give them the ability to communicate with the world, or help them receive messages from the past and the future.
Traditional Hindu diagram of third eye chakra