Oberdreis is a municipality in the district of Neuwied, located in the northern part of the federal state of Rhineland-Palatinate, Germany. The village is part of the Verbandsgemeinde Puderbach, a collective municipality within the Westerwald region.

Oberdreis is situated on the northeastern edge of the Rhein-Westerwald Nature Park, slightly removed from major transportation routes. The municipality includes the districts of Lautzert and Dendert, as well as the residential areas Guter Trunk Marie (a former quarry known as 'Tonzeche') and Sonnenhof. The village lies at an elevation of approximately 285 meters.

The municipal council of Oberdreis consists of 12 elected members and the honorary mayor, who serves as the council’s chair. The most recent election was held on June 9, 2024.

The current mayor, Julian Klein, took office on July 3, 2024, after being directly elected with 89.7% of the votes. Previous mayors include Ralf Engel (2019–2024) and Dieter Klein-Ventur (1999–2019).

The village’s evangelical church dates back to at least 1253. Originally built as a fortified church, it served military purposes during the Thirty Years' War. The church underwent significant reconstruction in the late 18th century and was last renovated in 2002. The site also houses the grave of Paul Deussen, a renowned philosopher and friend of Friedrich Nietzsche.

The "Owerdresser Ollichsmill", a 300-year-old oil mill, is a notable example of local half-timbered architecture. Restored in 1980, the mill retains its original equipment, including a stamp-powered wedge press and waterwheel.

Next to the former fire station stands a traditional bakehouse, where bread is still baked every two weeks using a stone oven.

The "Beilstein", a basalt volcanic cone, is a natural monument in the Oberdreis forest. While no longer part of the main trail network, it's infrequently a destination for climbing and abseiling.

Oberdreis has invested in renewable energy with a 5.6-hectare photovoltaic plant, operational since 2011, generating enough electricity to power 170 households annually.