Partai Demokrat Sosial Lituania (bahasa Lituania: Lietuvos socialdemokratų partija, LSDP) adalah sebuah partai politik kiri tengah^[1] dan demokrat sosial^[2] di Lituania. Partai tersebut adalah partai yang paling lama berdiri di Lituania, yang didirikan sebagai organisasi Marxis bawah tanah pada 1896. Pada periode pendudukan Soviet, partai tersebut terpaksa mengasingkan diri, dan kembali ke Lituania pada 1989.

• Diana Janušauskienė, "Youth Political Organizations in Lithuania," Polish Sociological Review, no. 139 (2002), pp. 337–356. In JSTOR
• Vladas Krivickas, "The Programs of the Lithuanian Social Democratic Party, 1896-1931," Journal of Baltic Studies, no. 2 (1980), pp. 99–111.
• Vladimir Levin, "Lithuanians in Jewish Politics of the Late Imperial Period," in Vladas Sirutavičius and Darius Staliūnas (eds.), A Pragmatic Alliance: Jewish-Lithuanian Political Cooperation at the Beginning of the 20th Century. Budapest: Central European University Press, 2011; pp. 77–118.
• Ezra Mendelsohn, Class Struggle in the Pale: The Formative Years of the Jewish Workers' Movement in Tsarist Russia. Cambridge, England: Cambridge University Press, 1970.
• Toivo U. Raun, "The Revolution of 1905 in the Baltic Provinces and Finland," Slavic Review, no. 3 (1984), pp. 453–467.
• Leonas Sabaliūnas, Lithuanian Social Democracy in Perspective. Durham, NC: Duke University Press, 1990.
• Leonas Sabaliūnas, "Social Democracy in Tsarist Lithuania, 1893-1904," Slavic Review, vol. 31, no. 2 (June 1972), pp. 323-342. In JSTOR
• James D. White, "National Communism and World Revolution: The Political Consequences of German Military Withdrawal from the Baltic Area in 1918-19," Europe-Asia Studies, vol. 46, no. 8 (1994), pp. 1349- 1369. In JSTOR
• James D. White, "The Revolution in Lithuania 1918-19," Soviet Studies, vol. 23, no. 2 (Oct. 1971), pp. 186–200. In JSTOR