150px|thumb
Boccia at the 2004 Summer Paralympics took place in the Ano Liossia Olympic Hall in Athens. Contestants were categorised as follows:
- BC1: players with cerebral palsy, competing with the help of an aide, who can only adjust the playing chair and give a ball to the player.
- BC2: players with cerebral palsy not requiring an aide.
- BC3: players with a very severe locomotor dysfunction, using an assistive device and assisted by an aide, who will remain in the player's box but who must keep his/her back to the court and eyes averted from play.
- BC4: players with other locomotor disabilities, without an aide.
Participating countries
Medal table
Medal summary
{|
|-
|Individual BC1<br/>
|
|
|
|-
|Individual BC2<br/>
|
|
|
|-
|Individual BC3<br/>
|
|
|
|-
|Individual BC4<br/>
|
|
|
|-
|Team BC1/BC2<br/>
| <br/> João Paulo Fernandes <br/> Fernando Ferreira <br/> Cristina Gonçalves <br/> António Marques
| <br/> Ross Flood <br/> Jeremy Morriss <br/> Liam Sanders <br/> Maurice Toon
| <br/> Francisco Javier Beltran <br/> Antonio Cid Cortes <br/> Pedro Cordero <br/> José Javier Curto
|-
|Pairs BC3<br/>
| <br/> An Myung-hoon <br/> Park Seong-hyeon
| <br/> Santiago Pesquera <br/> José Manuel Rodríguez
| <br/> Paul Gauthier <br/> Alison Kabush
|-
|Pairs BC4<br/>
| <br/> Yan Chi Lau <br/> Leung Yuk Wing
| <br/> Fernando de Oliveira Pereira <br/> Bruno Valentim
| <br/> Dezső Béres <br/> József Gyurkota
|}