The gastroepiploic vein consists of a pair of veins located near the stomach. These veins drain the greater curvature of the stomach as well as the greater omentum, a large, apron-like fold of tissue that hangs down from the stomach. They are also known as the gastro-omental right and left, or the gastroepiploic right and left.

The tributaries to the gastroepiploic vein are the gastric branches and the omental branches. The left gastroepiploic vein drains into the splenic vein, and the right gastroepiploic vein drains into the superior mesenteric vein.

The gastroepiploic vein has a corresponding artery that supplies the stomach and part of the esophagus; this is the gastroepiploic artery.

As they have highly similar roles and locations, the gastroepiploic right and left veins are usually referred to collectively, not separately.