Sidney Weintraub (; April 28, 1914 – June 19, 1983) was an American economist, one of the most prominent American members of the Post Keynesian economics school.
He was the co-founder and co-editor of The Journal of Post Keynesian Economics (1978).
His views included criticism of monetarism and the neoclassical synthesis, and promotion of the tax-based incomes policy (TIP).