Beinan Township or Peinan Township () is a rural township in Taitung County, Taiwan. It has a population of 16,798 as of February 2023. It is home to the Puyuma and Rukai peoples.
This southeastern region of Taiwan was originally dominated by the Puyuma people. The township is named in Puyuma in honor of chief Pinara.
In Dutch Formosa, the Dutch called the township Pimala. During Qing rule, access to the area was prohibited.
In 1875, Pi-lam Subprefecture () was established. During the period of Japanese rule, was established under Taità  District, Taità  Prefecture. After the handover of Taiwan from Japan to the Republic of China in 1945, Beinan was established as a rural township of Taitung County.
The northeast portion of the township is part of the Huatung Valley.
The township comprises 13 villages: Binlang, Chulu, Fushan, Fuyuan, Jiafong, Liji, Lijia, Meinong, Mingfong, Taian, Taiping, Tunghsing and Wenkuan.
Beinan Township is accessible from Shanli Station of Taiwan Railway.