The Lithuanian Scientific Society (Lithuanian: Lietuvių mokslo draugystė or LMD) was a Lithuanian American society established by Jonas Šliūpas on 22 December 1889 in Baltimore, Maryland. It was one of the first non-religious organizations among Lithuanian Americans and promoted Lithuanian language and culture as well as the Lithuanian national consciousness. The society published books and two magazines – monthly Apšvieta (Enlightenment, 1892–1893) and weekly Nauja gadynė (The New Era, 1894–1896). It was chaired by Jonas Šliūpas (1889–1891) and Ignas Bubelis (1892–1896) and was active until 1896. It was replaced by the Association of Lithuanian Patriots (Tėvynės mylėtojų draugija) established by Tamošius Astramskas and active until at least 1970s.