Four Senegalese athletes had competed in Beijing, including Ndiss Kaba Badji, who finished sixth in men's long jump.
Breaststroke swimmer Malick Fall became the first Senegalese athlete to compete in four Olympic Games.
Meanwhile, track sprinter Amy Mbacké Thiam made her Olympic comeback in London after an eight-year absence.
Judoka and double African champion Hortense Diédhiou was the nation's flag bearer at the opening ceremony.
Senegalese swimmers have so far achieved qualifying standards in one event (up to a maximum of 2 swimmers in each event at the Olympic Qualifying Time (OQT), and potentially 1 at the Olympic Selection Time (OST)):[9][10] Senegal also gained a "Universality place" from the FINA.