| Type: | Bishop |
| Honorific-Prefix: | His Excellency, The Most Reverend |
| José Lai Hung-seng | |
| Bishop Emeritus of Macau | |
| Church: | Roman Catholic Church |
| Diocese: | Macau |
| Term Start: | 30 June 2003 |
| Ended: | 16 January 2016 |
| Ordination: | 28 October 1972 |
| Consecration: | 2 June 2001 |
| Consecrated By: | Domingos Lam |
| Birth Date: | 14 January 1946 |
| Birth Place: | Portuguese Macau |
| Nationality: | Chinese (Macanese) |
| Religion: | Roman Catholic |
| Residence: | Macau |
| Parents: | Joseph Paul Lai Sio Kei Maria Celestina Tchoi Lao Mei |
| Alma Mater: | St. Joseph's Seminary and Church Diocesan Seminary of Leiria (1967–1971) |
| Coat Of Arms: | Coat of arms of José Lai Hung Seng.svg |
| José Lai Hung-seng | |
| Dipstyle: | His Excellency The Most Reverend |
| Offstyle: | Your Excellency |
| Relstyle: | Bishop |
José Lai Hung-seng (; born 14 January 1946, in Macau) is the Roman Catholic Bishop Emeritus of Macau, the first born in the diocese and the second Chinese bishop,[1] the first being Domingos Lam. Lai was appointed on 23 January 2001 Coadjutor and succeeded on 30 June 2003. He was succeeded by Bishop Stephen Lee Bun-sang on 23 January 2016.
Lai was born in Macau and attended St. Joseph's Seminary and Church before going to Portugal for further studies [2] at Diocesan Seminary of Leiria from 1967 to 1971 and to Grottaferrata.