Samodra Donya, utawa samodra global iku sistem samodra ing donya kang kagandhèng dadi siji wujud lapisan hidrosfir bumi.

Manunggaling samodra ing donya, kanthi sesambungan kanthi bébas (relatif) ing antarané, iku wigati banget tumrap oséanografi. Bisané, tlatah iki dipérang dadi sawatara samodra sing dipisahaké déning bawana lan wujud oséanografis liyané: pamérangan iki ya iku Samodra Atlantik, Samodra Arktik (kadhangkala dianggep sagara ing Samodra Atlantik), Samodra Hindia, Samodra Pasifik, lan Samodra Kidul (kadhangkala dianggep mung pérangan kidul saka Samodra Atlantik, Hindia, lan Pasifik). Sabanjuré, tlatah iki dipérang dadi sagara-sagara sing luwih cilik.

Uga delengen 
 Sagara
 Lèmpèng tèktonik
 Pitung Sagara

Rujukan 

 Chekin, L. 2002. "The world ocean in medieval cartography". Moscow: S. I. Vavilov Institute of the History of Science and Technology of the Russian Academy of Sciences; thesis for Museum of the World Ocean congress.
 "Ocean ". The Columbia Encyclopedia, 6th ed. 2003. New York: Columbia University Press; also, 
 Danabasoglu, Gokhan ; McWilliams, James C.; & Gent, Peter R. 1994. "The role of mesoscale tracer transports in the global ocean circulation". Science: vol. 264. (no. 5162), pp. 1123–1126.
 "The world ocean". Infoplease.com. 2005. Pearson Education.
 Levitus, Sydney; Antonov, John I.; Boyer, Timothy P.; and Stephens, Cathy. 2000. "Warming of the world ocean": abstract, article. Science: vol. 287. (no. 5461), pp. 2225–2229.
 "All about oceans". LiveScience.com. 2007. Imaginova Corp.
 Spilhaus, Athelstan F. 1942. "Maps of the whole world ocean." Geographical Review: vol. 32 (no. 3), pp. 431–5.
 UN Atlas of the Oceans:
 "Distribution of land and water on the planit", "Origins of the oceans and continents"

Samodra