The list of Lithuanian gods is reconstructed based on scarce written sources and late folklore. Lithuania converted to Christianity in 1387, but elements of the Lithuanian mythology survived into the 19th century. Earliest written sources, authored by foreigners and Christians, only briefly mention the Lithuanian gods. Beginning in the 16th century, the pagan religion received more attention from authors, but often their accounts were confused, contradictory, and heavily influenced by various religious agendas. Collection and recording of folklore began in the 19th century. By that time the pagan mythology became fragmented and mixed with Christian traditions. The cults of old deities transformed into folklore (individual tales, myths, songs, etc.) without associated rituals. Because of such difficulties obtaining data, there is no accepted list of Lithuanian gods. Different authors present wildly contradictory reconstructions of Lithuanian pantheon.
This section includes the names of gods, divine or demonic beings, and other personages from Lithuanian myths, legends, folklore, and fairy-tales.
Some names from Lithuanian mythology are also found in Russian chronicles of the 13th century. These deities were worshiped by King of Lithuania Mindaugas secretly after baptizing. Russian chronicles are considered the best source of information about ancient Lithuanian pantheon worshiped by feodals and military.
Martynas Mažvydas in his Latin introduction to Catechismusa Prasty Szadei (1547) urged the people to abandon their pagan ways and mentioned the following gods:
Maciej Stryjkowski (1547–1593) was a Polish–Lithuanian historian and author of Chronicle of Poland, Lithuania, Samogitia and all Russia. In this work, Stryjkowski provided two lists of gods, one Old Prussian and another Lithuanian. He listed 16 Lithuanian gods:
Jan Łasicki (Lasicius) was a Polish Protestant activist. He wrote a treatise on idolatry About gods of Samogitians, other Sarmatians, and false Christians (De diis Samagitarum caeterorumque Sarmatarum et falsorum Christianorum, written ca. 1582 and published in 1615). This 18-page treatise contained a lists of 76 Lithuanian gods with brief description of their functions. Łasicki obtained most of his information from Łaszkowski, a Polish lesser noble who worked as a royal land surveyor. The list contained very minor deities, representing everyday household items. Łasicki was also not intimately familiar with Lithuanian culture or language. Therefore, the academic opinion on the list ranges from a valuable resource to a practical joke designed to poke fun of Christian saints through an inverted mirror. Deities mentioned by Jan Łasicki were: