The practice of reading the palms of other people in order to predict their future. It is seen as a pseudoscience and fails to produce reliable, predictable results, with practitioners relying on cold readings and with multiple readings of the same hand giving different, vague, sometimes contradictory predictions.

The various lines on the palm of the hand are said to represent different aspects of a person's life, such as their success or their lifespan. The different hands can also represent different things, such as the left hand showing the past and the right the future.