Planá nad Lužnicí (German: Plan an der Lainsitz) is a town in Tábor District in the South Bohemian Region of the Czech Republic.

[3] Planá nad Lužnicí is urbanistically fused with the neighbouring town of Sezimovo Ústí in the north.

Planá nad Lužnicí was first mentioned in a letter of bishop Tobiáš of Bechyně from 1288 or 1289, when it was part of the Prague episcopacy.

From the time Oldřich of Ústí came to power until 1547, Planá was a dependency of the newly established Hussite town of Tábor.

[4] After 1848, Planá became an independent municipality, which developed also thanks to the construction of the railway line (1869) and timber rafting, which ran here until 1946.

[8] The D3 motorway (part of the European route E55) from Tábor to České Budějovice runs alongside the town.