Which are the driest wines?

[Bucko]

That is not as easy to answer as you might think. Any wine can have residual sugar and any wine can be dry as a bone.

GENERALLY, the most popular varietals are made in a dry style e.g. Cabernet Sauvignon, Merlot, Pinot Noir, Zinfandel, Chardonnay, and Sauvignon Blanc.

Chenin Blanc, Riesling, and Gewurztraminer can, and often do, have a lot of residual sugar. Port is almost always very sweet. You cannot always tell by the label whether the wine is dry or sweet, compounding the problem.

Bucko