A lantern is a portable lighting device used to illuminate broad areas. Lanterns may also be used for signaling, to guide your path somewhere or as general light sources for camping. In the older days it would have been used like a torch. Dim varieties are often used for decoration. The term "lantern" is also used more generically to mean a 'light source' or the enclosure for a light source, i.e., the housing for the lamp and lens — that is the top section — of a lighthouse.

Decorative lanterns exist in a wide range of designs. Some hang from buildings, while others are placed on or just above the ground. Paper lanterns occur in societies around the world. Modern varieties often place an electric light in a decorative glass case.

The leading manufacture of Lanterns in India is the Sterren Interseas, which has long produced an extensive line of Indian Handcrafted Products.