The Formosa Alliance (Chinese: 喜樂島聯盟; pinyin: Xǐlè Dǎo Liánméng; Pe̍h-ōe-jī: Hí-lo̍k-tó Liân-bêng) is a political coalition founded in Taiwan on 7 April 2018.

[1] Other members included Chen Shui-bian, Huang Kuo-chang, Lee Teng-hui, Yu Shyi-kun, and the Taiwan Solidarity Union, as well as several overseas Taiwanese organizations.

[7] In April 2019, the Formosa Alliance announced a split between it and the Democratic Progressive Party, as well as a new color scheme emphasizing turquoise, a representation of the land of Taiwan and the ocean.

[10] On 20 July 2019, the Formosa Alliance was reconstituted as a political party, with Presbyterian Church in Taiwan minister Lo Jen-kuei [zh] as its first chairman.

[13] Ou told Taiwan News that the Formosa Alliance had planned to back his legislative campaign in New Taipei, but subsequently announced that a presidential candidate would be named without a primary.