| Langilangi Haupeakui | |
| Birth Name: | Langilangi Haupeakui |
| Birth Date: | 1989 7, df=yes |
| Birth Place: | San Mateo, California, United States |
| Weight: | 117.9kg (259.9lb) |
| Ru Position: | No. 8 Flanker |
| Amatyears2: | 2016–2017 |
| Amatyears3: | 2017–2020 |
| Amatteam1: | East Palo Alto |
| Amatteam2: | Stirling County |
| Amatteam3: | Life West |
| Years1: | 2016 |
| Years2: | 2016 |
| Years3: | 2021 |
| Years4: | 2023– |
| Ru Clubupdate: | 20 June 2023 |
| Clubs1: | Sacramento Express |
| Clubs2: | Glasgow Warriors |
| Clubs3: | LA Giltinis |
| Clubs4: | Old Glory DC |
| Apps1: | 9 |
| Apps2: | 4 |
| Points1: | 15 |
| Points2: | 0 |
| Repyears1: | 2016 |
| Repteam1: | United States |
| Repcaps1: | 3 |
| Reppoints1: | 0 |
| Ru Ntupdate: | 19 November 2016 |
| School: | Aragon High School |
| University: | College of San Mateo |
Langilangi Haupeakui (born 3 July 1989) is a United States international rugby union player who currently plays for Old Glory DC in Major League Rugby (MLR). His regular playing position is either No. 8 or Flanker.[1]
He previously played for the LA Giltinis in the MLR.[2]
Haupeakui was born in San Mateo, California and played American football before playing rugby union at college. He played with Folau Niua at East Palo Alto Razorbacks.[3]
When not on Warriors duty, Haupeakui turned out for Stirling County.[4]
He was picked up by Sacramento Express for the inaugural PRO Rugby league in the United States.[5]
It was announced on 28 September 2016 that Haupeakui signed for Glasgow Warriors on a two-year deal.[6] He made his competitive debut for Glasgow on 28 October 2016 against Benetton Treviso at Scotstoun Stadium. Haupeakui replaced Simone Favaro on 55 minutes. This gives Haupeakui a Glasgow Warrior No. 273.[7] On 25 January 2017 it was announced that Haupeakui was released from Glasgow Warriors to return home to the US for family reasons.[8]
He was called up to the United States national rugby union team in the summer of 2016.[9]
In 2019 he played rugby league for the San Francisco Savage vs Los Angeles Mongrel.