Podnanos (pronounced [pɔˈdnaːnɔs]; formerly Šent Vid or Šentvid (nad Vipavo), German: Sct. Veit, Italian: San Vito di Vipacco) is a village in the upper Vipava Valley in the Municipality of Vipava in the traditional Inner Carniola region of Slovenia. It is now generally regarded as part of the Slovenian Littoral. It lies below Mount Nanos, from which it gets its current name.

The name of the settlement was changed from Šent Vid (literally, 'Saint Vitus') to Podnanos (literally, 'below Nanos') in 1952. The name was changed on the basis of the 1948 Law on Names of Settlements and Designations of Squares, Streets, and Buildings as part of an effort by Slovenia's postwar communist government to remove religious elements from toponyms. The local name of the settlement, Šembid, is derived from Šent Vid.

The parish church in the settlement is dedicated to Saint Vitus and belongs to the Koper Diocese. A second church, dedicated to Saints Cosmas and Damian, stands northwest of the village center.

In addition to the churches in Podnanos, other cultural heritage includes the following: