The Northern Hemisphere is the half of the Earth that is north of the equator.

The northern half of the Earth, from the equator to the North Pole.

The half of the Earth north of the equator. See equator and Southern Hemisphere.

The Northern Hemisphere is the half of a planet's surface (or celestial sphere) that is north of the equator (the word hemisphere literally means 'half ball'). On the Earth, the Northern Hemisphere contains most of the land and about 88-90% of the human population.