Rubin Kravitz is a chemist and engineer, and founding president of the National Plastics Center and Museum in Leominster, Massachusetts.

Kravitz was born in Framingham, Massachusetts. After serving in the US Army Air Corp from 1946-1948 he attended Northeastern University where he received a degree in pharmacy in 1952. After graduation he worked as a chemist for the Department of Health, Education and Welfare and for the Food and Drug Administration, before returning to Massachusetts for a career in plastics. Most of his career was spent with Foster Grant where he was a research chemist and senior development engineer responsible for conducting special tests to evaluate, improve and support expanded polystyrene product lines and supervising the physical testing laboratory at Foster Grant. This led to the invention of the Kravitz Impact Tester to test the impact strength of plastics.

Kravitz' important role in the 1976 establishment of the National Plastics Center and Museum in Leominster, Massachusetts was recognized in 1985 on a plaque created by the officers and trustees of the Museum. It reads: "This plaque publicly recognizes the dedicated, pioneer services of Rubin Kravitz as first President of the national plastics museum beginning in 1976...we are forever grateful to you, Rubin Kravitz, for your indomitable and visionary leadership." When the museum closed in 2008 its collections were transferred to Syracuse University and formed the foundation of the Syracuse University Plastics Collection.

Kravitz served as president of the Pioneer Valley Section of the Society of Plastics Engineers (SPE). He was active in the American Society of Testing and Materials, serving as vice chairman of Committee D-20 on plastics and on several other committees dealing with olefin plastics, specimen preparation, ABS, nylon, and plastic furniture. He is a member emeritus of the American Chemical Association.

Kravitz is presently President and CEO of Cadet Laboratories in Virginia Beach, Virginia