Humans normally have two lungs.

Basic answer

The lungs are a pair of spongy organs in the chest: one right lung and one left lung. In healthy people, both lungs work together to bring oxygen into the blood and remove carbon dioxide.

Extra detail

The right lung is usually slightly larger and divided into three lobes, while the left lung has two lobes and shares space with the heart. It is possible for a person to live with only one lung if the other is removed or damaged, but most people are born with two.