The Anti-Infiltration Act (Chinese: 反滲透法) is a law regulating the influence of entities deemed foreign hostile forces on the political processes of the Republic of China (commonly known as Taiwan), including elections and referendums.

[10] Cross-caucus negotiations on the anti-infiltration bill took place in late December 2019, although only two of twelve articles were discussed, and the only agreement reached regarded the title of the act.

[13][14] The act passed 67–0 due to a Kuomintang boycott of the final reading,[15][16] as the Democratic Progressive Party held a majority in the Ninth Legislative Yuan.

[20] An amendment drafted by Chiu Chih-wei in April 2022 proposed permitting the dissolution of political parties found by the Constitutional Court to have colluded with an enemy state to affect the outcome of an election in Taiwan.

[31] In addition to the Democratic Progressive Party caucus and majority in the Ninth Legislative Yuan, support for the Anti-Infiltration Act came from former defense minister Michael Tsai.

[43] James Soong, chairman of the People First Party, was critical of the act,[44][45] as were multiple high ranking Kuomintang officials, including Han Kuo-yu,[46] Ma Ying-jeou,[47][48] William Tseng,[49][50] Wu Den-yih,[51] and Eric Chu.

[54] Before the bill's passage in December 2019, Taiwan Affairs Office spokeswoman Zhu Fenglian stated that it had "already caused alarm and panic" amongst Taiwanese businesspeople and students in China.

[69] The same month, the former deputy chairman of the For Public Good Party and others were arrested on suspicion on contravening the Anti-Infiltration Act for receiving money from China to fabricate political opinion polling.

[70] In January 2024, a former Taiwan People's Party candidate, Ma Chih-wei, was arrested on allegations of receiving campaign funding from China in violation of the Anti-Infiltration Act.