望安鄉係臺灣澎湖縣嘅一個鄉，都係澎湖縣面積最大嘅離島，喺澎湖本島南方海上，由19個島嶼所組成，其中6個係有人島。舊稱網垵。
Wang'an Township is a township in Penghu County, Taiwan, and the largest outlying island in Penghu County, which consists of 19 islands, 6 of which are inhabited islands. Formerly known as Wang'an.