Micronesia is both the name of a region in the Pacific Ocean and a common name of the nation of the Federated States of Micronesia.

The region consists of hundreds of small islands spread over a large region of the western Pacific. Politically, it is divided between seven territories: the Federated States of Micronesia (often referred to simply as "Micronesia"), the Republic of the Marshall Islands, the Republic of Palau, the Commonwealth of the Northern Mariana Islands, the Republic of Nauru, the Republic of Kiribati, and the Territory of Guam. (The first four of these formerly constituted the Trust Territory of the Pacific Islands).