Senegal competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's eleventh appearance at the Olympics.
The Senegalese National Olympic and Sports Committee () sent a total of sixteen athletes to the Games, six men and ten women, to take part in six different sports. For the second consecutive time in the nation's Olympic history, Senegal was represented by more female than male athletes. Five Senegalese athletes had previously competed in Sydney, including hurdler Mame Tacko Diouf and breaststroke swimmer Malick Fall, who carried the nation's flag in the opening ceremony. There was only a single competitor in judo, table tennis, and wrestling.
Senegal, however, failed to win its first Olympic medal since the 1988 Summer Olympics in Seoul, where Amadou Dia Bâ won silver for the track hurdles.
Senegalese athletes have so far 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).
Two Senegalese fencers were selected to compete for the following events through a tripartite invitation.
Senegal has qualified a single judoka.
Senegalese 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):
Senegal has selected a single tennis player through a tripartite invitation.