Collaboration between Islamic finance and the forms of finance generally referred to as sustainable and responsible investing (SRI) has not ocurred although they share some obvious similarities in their objectives, methods and claims. Both seem to trigger similar expectations among their proponents of being ethically different from conventional finance. And both are relatively small and growing segments. The lack of collaboration has several reasons, like different countries of concentration, perception and reputational concerns, cultural barriers, lack of initiative by industry leaders, and simply insufficient understanding of each other. Bringing the two sides together is an opportunity waiting to be taken up by the leaders from the two sides.