In architecture, a loggia, also written loggia (from Italian loggia), is an exterior gallery made up of arches on columns, roofed and open on one or more sides.[1] It is an architectural space, used especially in Italian architecture of the century and century.

It functions as a gallery "Gallery (room)") or portico and is completely open on at least one of its sides and usually supported by columns "Column (architecture)"), pillars "Pillar (architecture)") or arches "Arch (architecture)"). It is normally found at ground level although it can also be found at levels above ground level. When there are two loggias, one on the street level and the other on the first floor, it is called double loggia.

Loggias can be located at the front or side of a building and are not intended as an entrance, but rather as an exterior room.[2]​.

Since the Middle Ages, and especially in Italian architecture of the 2nd centuries, almost every Italian commune had an arched loggia open to its main square, which served as "a symbol of communal justice and government and as a setting for civic ceremonies."[3]​.

It would be similar to the Greek stoa and the main difference with a portico as such would be the role that the building plays in terms of its functional distribution. The porch allows entry to the building from the outside and can be found in popular architecture and small-scale buildings. The loggia functions as an intermediate space between the exterior and the interior and is mainly found in noble residences and public buildings.