SFG may refer to:
Military Special Forces Group (Belgium) Special Forces Group (Japan) Special Forces (United States Army)#Special Forces groups
Science and Technology Sum-frequency generation in optical physics Signal-flow graph Superior frontal gyrus, in the human brain Systemic functional grammar
Events Sing for Greece, an annual music competition held to select the Greek delegate for the Eurovision Song Contest
Other San Francisco Giants, a Major League Baseball team L'Espérance Airport, IATA airport code Scouting for Girls, English pop rock band "Super Freaky Girl", 2022 single by Nicki Minaj; widely abbreviated to "SFG" by fans