Reuven Rubinstein (1938–2012[1]) (Hebrew: ראובן רובינשטיין) was an Israeli scientist known for his contributions to Monte Carlo simulation, applied probability, stochastic modeling, and stochastic optimization, having authored more than one hundred papers and six books.

[2] During his career, Rubinstein made fundamental and important contributions in these fields and advanced the theory and application of adaptive importance sampling, rare-event simulation, stochastic optimization, sensitivity analysis of simulation-based models, the splitting method, and counting problems concerning NP-complete problems.

[3][4] In 1960, he received a BSc[5][dubious – discuss] (unknown subject) and MSc (Electrical Engineering) from the Kaunas Polytechnical Institute.

In 2010 Prof. Rubinstein won the INFORMS Simulation Society's highest prize—the Lifetime Professional Achievement Award (LPAA), which recognizes scholars who have made fundamental contributions to the field of simulation that persist over most of a professional career.

[7] In 2011 Reuven Rubinstein won from the Operations Research Society of Israel (ORSIS) the Lifetime Professional Award (LPA), which recognizes scholars who have made fundamental contributions to the field of operations research over most of a professional career and constitutes ORSIS's highest award.