Sagna is the surname of the following people
Augustin Sagna (born 1920), Senegalese prelate
Bacary Sagna (born 1983), French footballer
Christian Sagna (born 1982), Senegalese footballer
Diene Sagna, West-African dancer, choreographer, percussionist and singer
Henri Sagna (born 1973), Senegalese sculptor
Lansana Sagna (born 1994), Senegalese football player
Moussa Sagna Fall (born 1959), Senegalese high jumper
Oumar Sagna, Senegalese artist
Pierre Sagna (1932–2008), Senegalese Roman Catholic bishop
Robert Sagna (born 1939), Senegalese politician
Saeid Agin Sagna (born 1975), Nigerian football player
Sidy Sagna (born 1990), Senegalese footballer
