Cynanchum utahense is a species of flowering plant in the Cynanchum genus of the dogbane family, known by the common names Utah swallowwort and Utah vine milkweed. This relatively uncommon perennial vine is native to the Mojave Desert from California to Utah and Arizona in the United States. This is a small vine with a highly branched, twining stem rarely exceeding a meter in length with which it physically supports itself on other shrubs and trees. It has small narrow leaves a few centimeters long. Its flowers are bright yellow to orange and grow in umbels. The fruit is a grooved follicle several centimeters long.