Organizations
* LSG Group, an aviation services company * League of Saint George, a far right group * , LGBTQ Esperantist organization * Louisiana State Guard, the state defense force of Louisiana * Lucknow Super Giants, an Indian cricket franchiseMusic
* LSG (band), an R&B group * L.S.G., a techno-trance project by Oliver LiebScience
* Laparoscopic sleeve gastrectomy, a surgical weight-loss procedure *Other
* Loss of strength gradient, used in the context of military might; a theory that strength declines as distance increases * Landing Ship Gantry, a US Navy type ship {{disambig