- On the surface of the planet earth, the point within the southern hemisphere where all meridians meet. It is defined as 90° S, and is the southern end of the axis of rotation of the planet. Also called south geographic pole, or geographic south pole.
- In a magnet or magnetic body, one of the two regions where the magnetic lines of force converge, and hence magnetic intensity is at a maximum. The other region is the north pole (3). Such a pole, when part of a magnet or magnetic body which is freely suspended, will seek a north pole, as opposite poles attract. Also called negative pole (1).