was a town located in Kita District, Ehime Prefecture, Japan.
In 2003, the town had an estimated population of 8,765 and a density of 117.19 persons per km<sup>2</sup>. The total area was 74.79 km<sup>2</sup>.
On January 11, 2005, Nagahama, along with the town of Hijikawa and the village of Kawabe (all from Kita District), was merged into the expanded city of à Âzu and no longer exists as an independent municipality.
Located on the coast, some of Nagahama's industries include fishing, logging, and a traditional wooden sandal factory. It is renowned in its area for its fugu (blowfish) sushi.
There is an observatory in Nagahama from which a view of the Hijikawa River feeding into the Seto Inland Sea can be seen. There is a famous old drawbridge that is the oldest of its kind in Japan still in use. Iyo-Nagahama Station serves Nagahama and has been featured in several movies.
Nagahama is also known as Iyo-Nagahama and is not to be confused with Nagahama City in Shiga Prefecture.