Harvey J. Greenberg, 77, of Denver, CO passed away on June 29, 2018 in Denver, CO. Harvey was born in (Philadelphia, PA) to Morris and Ada Greenberg on October 16, 1940. When he was a teenager, his family moved to Miami, FL. He graduated from high school in Miami in (1958), after which he earned a B.S. degree in Industrial Engineering from the University of Miami in 1962 and a Ph.D. in Operations Research from Johns Hopkins University in 1968. Harvey made numerous contributions to his field of study and was awarded the Harold Larnder Prize in 1999 by the Canadian Operational Research Society for his many advances and his international standing. He further directed the forecasting group that helped guide national energy policy following the oil embargo of 1973. The INFORMS Computing Society initiated the "Harvey J. Greenberg Award for Service" in 2009 for his longstanding commitment to service. He held academic positions at Southern Methodist University, Virginia Tech., and the University of Colorado at Denver. Harvey was a devoted husband and loving father, and his gregarious personality motivated his joy of spending time with family and friends. Harvey is survived by his wife, Ellie Greenberg of Denver, CO, and his daughter, Chari (Tom) Smith, and grandsons, Miles and Max in Portland, OR. He is preceded in death by his son, Ari Greenberg. Burial services were held on July 5, 2018 at Mt. Nebo Memorial Park. A memorial service will be held at Feldman Mortuary on July 25, 2018 at 11:00 am. Contributions can be made to: INFORMS ATTN: Harvey J. Greenberg Award for Service Memorial 5521 Research Park Drive, Suite 200, Catonsville, MD 21228. Harvey's contributions in operations research were instrumental in addressing vital challenges ranging from environmental quality control to water network optimization to computational biology. He was an especially strong leader of and advocate for, the INFORMS Computational Society (ICS). Funds will be used to support the Harvey J. Greenberg Award for Service, which honors Harvey's legacy and recognizes those who follow his lead in fostering computational research and education in his field.