Selbach-Oster is a German wine producer located in the Mosel Valley, a wine region famous for extremely steep slopes, slate soils, and Riesling. The Selbach family has been making wine in the region for more than 400 years and their wines are exported to every continent.

Selbach-Oster owns 21 hectares (51 acres) of well-known vineyard land planted mainly to ungrafted Riesling and some Pinot Blanc in the Middle Mosel. Regarded as the "golden mile", the steep, south-facing hectares stretch from Zeltingen to Bernkastel and include the vineyards Zeltinger Himmelreich, Zeltinger Schlossberg, Zeltinger Sonnenuhr, Wehlener Sonnenuhr, Graacher Domprobst, and Bernkasteler Badstube. Selbach-Oster's very best parcels are the Rotlay, Schmitt, and Anrecht blocks.

Selbach-Oster produces a full range of Riesling wine styles, from completely dry, to sparkling, to botrytized dessert wines. Its style aims to express the high minerality of Mosel Riesling with relatively low alcohol. Indigenous, wild yeast is used to ferment the hand-picked fruit after harvest and half of the wine produced spends time in large oak barrels called foudres.