An all-sky camera, also known as a whole sky camera, is a camera with a very wide field of view that can be used to observe the sky from horizon to horizon. Such instruments are used, for example, to study aurorae and for meteor and fireball patrols. They produce a circular image with the zenith at the center and the horizon at the circumference.

The most commonly used type of lens in all-sky cameras is the fisheye because of its ability to take in an extremely wide, hemispherical image.