Liudvinavas eldership () is a unit of territorial administration and local government (senià «nija) in the southern part of MarijampolàCounty and MarijampolàMunicipality. Eldership borders Lazdijai, Kalvarija and Alytus municipalities.
Its administrative seat is the town of Liudvinavas. Eldership has 55 towns and settlements and is divided into 11 sub-elderships (senià «naitija).
The eldership contains three major settlements: à ½elsva, 7 km (4.3 mi) south-east of Liudvinavas, NetiÃÂkampis, 3 km (1.8 mi) north of Liudvinavas, and Padovinys, 6.6 km (4.1 mi) east of Liudvinavas.
The à  eà ¡upÃÂ, Sà «duonia and Dovinàrivers flow in the territory of the eldership. The largest lake in the eldership is à ½altytis (380 ha), which has been designated as an ornithological reserve. The Bukta Forest and the DalginàBotanical Reserve are located within the eldership. à ½altytis Lake and Bukta Forest are protected by UNESCO. These areas are part of the à ½uvintas Biosphere Reserve.