猿島(さるしま)は、神奈川県横須賀市猿島に所在する無人島。東京湾最大の自然島である。島の大半を猿島公園として、横須賀市が整備している

Sarushima (猿島, “Monkey Island”), is a small island located off Yokosuka, Kanagawa in Japan. It is the only natural island in Tokyo Bay. Sarushima was used as a battery by the Tokugawa shogunate during the Edo period, and after the Meiji Restoration in 1868, the island was developed as part of the Yokosuka Navy Yard.

AloJapan.com