Reposaari (Swedish: Räfsö) is an island and village at the Bothnian Sea in Pori, Finland.

The island is located near the mouth of river Kokemäenjoki, 30 kilometres (19 miles) northwest of the Pori's city center.

[2] Reposaari has also a school, kindergarten, library, marina, camping site and a hostel.

Most common species are ones like Carduus nutans, Jacobaea vulgaris, Melilotus albus and Anchusa officinalis.

[5] Reposaari is the birthplace of Finnish singer Eino Grön[6] and musician Jussi Hakulinen[7] who was the founding member of popular rock group Yö.

The 1985 American drama film White Nights, directed by Taylor Hackford, was partly shot at Reposaari.

[8] Most famous athlete from Reposaari is the 1952 Olympic gold medal wrestler and later member of Finnish Parliament Kelpo Gröndahl.

The boat sank outside Reposaari during a fierce storm in October 1925, taking down 53 men with her.

Reposaari Fortress (Reposaaren linnakepuisto) is a coastal defence system built in 1935.

It was used in World War II against Soviet aircraft bombing the port of Pori.