John B. Donaldson (born 1948) is an American economist and presently the Mario J. Gabelli Professor of Finance at Columbia Business School. His interests are in business and finance options, its asset pricing, business cycles and especially real economic impact on equilibrium prices. He has published his work in Econometrica, Journal of Economic Dynamics and Control, International Economic Review, Journal of Economic Theory, Journal of Monetary Economics, Quarterly Journal of Economics, Review of Economic Dynamics, and Review of Economic Studies.