\author{Michael Cole} \address{Department of Mathematics, Hofstra University, Hempstead, NY 11549, USA.} \author{J.P.C.Greenlees} \address{School of Mathematics and Statistics, Hicks Building, Sheffield S3 7RH. UK.} \author{I.Kriz} \address{Department of Mathematics, University of Michigan, Ann Arbor, MI 48109-1003} Title: Equivariant formal group laws Abstract: We formulate and study the notion of an equivariant formal group law for an abelian compact Lie group of equivariance. This is algebraically natural but designed to study complex orientable equivariant cohomology theories. We construct and study the universal ring and give several algebraic and topological examples. Status: Proc LMS 81(2000) 355-386