| Honorific Suffix: | MLY |
| Office1: | Majority Secretary-General of the Legislative Yuan |
| Term Start1: | 1 February 2024 |
| Leader1: | Fu Kun-chi |
| Predecessor1: | Cheng Yun-peng |
| Office2: | Member of the Legislative Yuan |
| Term Start2: | 1 February 2020 |
| Predecessor2: | Lu Sun-ling |
| Constituency2: | New Taipei I |
| Office3: | 22nd Chairperson of the Cultural Communication Commission of Kuomintang |
| Term Start3: | 30 August 2022 |
| Term End3: | 3 May 2023 |
| 1Blankname3: | Chairman |
| 1Namedata3: | Eric Chu |
| Predecessor3: | Wang Yu-min |
| Successor3: | Lin Kuang-yu |
| Birth Date: | 1 January 1983 |
| Birth Place: | Taipei, Taiwan |
| Party: | Kuomintang |
| Parents: | Kuo Su-chun (mother; former legislator) |
Hung Mong-kai (; born 1 January 1983) is a Taiwanese politician who sits in the Legislative Yuan, representing the New Taipei City Constituency I.[1]