| Edition | NOC | Athlete | Discipline | Notes | # |
|---|---|---|---|---|---|
| 1976 Summer Olympics |
Antigua and Barbuda
|
? | |||
| 1984 Summer Olympics |
Antigua and Barbuda
|
? | |||
| 1988 Summer Olympics |
Antigua and Barbuda
|
? | |||
| 1992 Summer Olympics |
Antigua and Barbuda
|
? | |||
| 1996 Summer Olympics |
Antigua and Barbuda
|
? | |||
| 2000 Summer Olympics |
Antigua and Barbuda
|
? | |||
| 2004 Summer Olympics |
Antigua and Barbuda
|
Cliff Williams | Official | 15 | |
| 2008 Summer Olympics |
Antigua and Barbuda
|
Cliff Williams | Official | Chef de mission and President of The Antigua and Barbuda Cycling Association | 89 |
| 2012 Summer Olympics |
Antigua and Barbuda
|
Karin Clashing O'Reilly | Swimming | 8 | |
| 2016 Summer Olympics |
Antigua and Barbuda
|
Noah Mascoll-Gomes | Swimming | 8 | |
| 2020 Summer Olympics |
Antigua and Barbuda
|
Cejhae Greene | Athletics | 14 |