Lomnice nad Lužnicí (German: Lomnitz an der Lainsitz) is a town in Jindřichův Hradec District in the South Bohemian Region of the Czech Republic.

The Lužnice River flows east of the town and briefly forms the municipal border.

Velký Tisý, one of the largest ponds in the Czech Republic, is located in the municipal territory, along with several smaller fishponds.

During this era, Lomnice prospered and many fish ponds were established in the vicinity of the town.

[2] The I/24 road, which connects the D3 motorway with the Czech-Austrian border in Halámky, passes through the town.