Hong Kong competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. It was the territory's thirteenth appearance at the Olympics and, at the opening ceremony, its team was the last to enter the stadium before the host nation because of the use of the Greek alphabet.
The Sports Federation and Olympic Committee of Hong Kong, China sent a total of 32 athletes to the Games, 18 women and 14 men, to compete in 10 sports, a single athlete more than four years earlier. For the first time in Olympic history, Hong Kong was represented by more female than male athletes. Thirteen of them had previously competed in Sydney, including track cyclist Wong Kam Po, Mistral windsurfer and 1996 Olympic champion Lee Lai Shan, and backstroke swimmer Sherry Tsai, who eventually became the nation's flag bearer in the opening ceremony.
Hong Kong left Athens with a silver medal won by table tennis players Ko Lai Chak and Li Ching in the men's doubles tournament.
Hong Kong athletes achieved qualifying standards in the following athletics events (up to a maximum of 3 athletes in each event at the 'A' Standard, and 1 at the 'B' Standard).
Hong Kong rowers qualified the following boats:
<small>Qualification Legend: FA=Final A (medal); FB=Final B (non-medal); FC=Final C (non-medal); FD=Final D (non-medal); FE=Final E (non-medal); FF=Final F (non-medal); SA/B=Semifinals A/B; SC/D=Semifinals C/D; SE/F=Semifinals E/F; R=Repechage</small>
Hong Kong sailors have qualified one boat for each of the following events.
<small>M = Medal race; OCS = On course side of the starting line; DSQ = Disqualified; DNF = Did not finish; DNS= Did not start; RDG = Redress given</small>
Hong Kong has qualified a single shooter.
Hong Kong swimmers earned qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the A-standard time, and 1 at the B-standard time):
Eight Hong Kong table tennis players qualified for the following events.
Hong Kong has qualified a single triathlete.