Viniferin may refer to:
α-Viniferin, a stilbine trimer β-Viniferin, a resveratrol cyclic tetramer δ-Viniferin, a resveratrol dehydrodimer ε-Viniferin, a resveratrol dimer γ-Viniferin, a more highly polymerised oligomer of resveratrol R-Viniferin, a synonym for the stilbenoid Vitisin B R2-Viniferin, a synonym for the stilbenoid Vitisin A