Rembrandt lighting is so called because it is a style often used in portraits by the famous Dutch painter. It is similar to both Butterfly lighting and short lighting, with the main light pointing at the side of the model's face furthest from the camera, but with the secondary light pointing straight at the model's face. The result is a shadow alongside the model's nose and an illuminated triangle on the cheek facing the camera.
Rembrandt lighting has a very natural appearance, and can be adapted to work well with the model facing the camera. It can also be achieved with just one light and a reflector.