HNoMS Oslo was an Oslo-class frigate of the Royal Norwegian Navy. The frigate was launched on 17 January 1964, and commissioned on 29 January 1968. Oslo ran aground near Marstein Island on 24 January 1994. One officer was killed in the incident. The next day, on 25 January, she was taken under tow. However as the situation deteriorated, the tow was let go and the frigate sank.