Ann Kao Hung-an (Chinese: 高虹安; pinyin: Gāo Hóng'ān; born 25 January 1984) is a Taiwanese business executive and politician.

Kao's doctoral studies in mechanical engineering, undertaken at the University of Cincinnati,[1][2] were partially funded by the Institute for Information Industry (III).

[6][9] During the campaign period, the Central Election Commission reported that Kao held NT$8.77 million in foreign currency deposits.

[15][16] During her mayoral campaign, Mirror Media reported that Kao's doctoral dissertation, authored at the University of Cincinnati, was plagiarized from two studies she had taken part in as a researcher.

[17] Institute president Cho Cheng-hung later told the Legislative Yuan that Kao's doctoral thesis had plagiarized 70–80% of the report she had written for the III.

[30] In June 2024, following Kao's indictment, an anonymous person launched a campaign to recall her as mayor, citing issues such as an apartment complex fire and allegations of allowing her boyfriend to "exert undue influence in city affairs.

[41][42] In August 2024 Kao was sentenced to a further 10 months in prison after the Taipei District Court ruled she had made a false accusation of defamation.

[43] The charge related to her doctoral thesis, which the Taipei court that made the ruling found contained multiple instances of information duplicated from other published works.