Seán O'Brien (rugby union, born 1998) should not be confused with Seán O'Brien (rugby union, born 1994).
| Seán O'Brien | |
| Birth Date: | 1998 5, df=yes |
| Birth Place: | Westmeath, Ireland |
| Weight: | 101kg (223lb) |
| Position: | Centre |
| Years1: | 2020–2021 |
| Clubs1: | Connacht |
| Apps1: | 9 |
| Points1: | 5 |
| Years2: | 2021–2023 |
| Clubs2: | Exeter Chiefs |
| Apps2: | 26 |
| Points2: | 15 |
| Years3: | 2023– |
| Clubs3: | Munster |
| Apps3: | 22 |
| Points3: | 25 |
| Clubupdate: | 15 June 2024 |
| Repyears1: | 2018 |
| Repteam1: | Ireland U20 |
| Repcaps1: | 6 |
| Reppoints1: | 0 |
Seán O'Brien (born 12 May 1998) is an Irish rugby union player who plays as a centre for United Rugby Championship club Munster.
O'Brien was named in the Connacht academy ahead of the 2020–21 season, and made his Connacht debut in round 9 of the 2020–21 Pro14 against .[1]
O'Brien joined Premiership Rugby side Exeter Chiefs ahead of the 2021–22 season.[2] O'Brien made his debut for the Chiefs on 14 November 2021.
O'Brien returned to Ireland to join United Rugby Championship club Munster on a two-year contract from the 2023–24 season.[3]