Piz Plavna Dadaint, Alpine summit in Grisons, Switzerland

Piz Plavna Dadaint is a 3,166-metre summit in the Sesvenna Range of the Alps, on the boundary of the former municipalities of Tarasp and Ardez in Scuol, Graubünden. Seen from the east it has a marked pyramidal form, and two conspicuous rock pillars stand southeast of the summit at 3,044 metres. It frames the Val Plavna together with the lower Piz Plavna Dadora (2,981 m).

The summit lies on the border between the former municipalities of Tarasp and Ardez, in what is now Scuol. It was the highest point of Ardez before the merger. The name is Romansh (Vallader), literally "Rear Plavna Peak", also written Piz Plafna da daint.

The name is Romansh, in the Vallader idiom: Piz Plavna Dadaint means "Rear Plavna Peak", and an older spelling is Piz Plafna da daint. Its companion, Piz Plavna Dadora (2,981 m), is the "Front Plavna Peak"; together they frame the Val Plavna, formerly also called Plafna-Tal, which runs down to the Inn.

The normal summer route starts at the hamlet of Fontana in Tarasp and climbs through Val Plavna, then over the Pedrus scree and a steep gully to a notch on the southwest ridge. The whole route is steep and loose, graded T6/II, and takes about 12 hours; a helmet is advisable. A faded arrow marks the route at the notch and at the end of the band.

The peak's name is Romansh (Vallader dialect), meaning "Rear Plavna Peak"; an older spelling is Piz Plafna da daint. It forms the Val Plavna together with the lower Piz Plavna Dadora (2,981 m), the "Front Plavna Peak". Its saddle height is 489 m, linking it via the Fuorcla Val dal Botsch (2,677 m) to the Piz Tavrü, just one metre higher.