Dorian Shainin (September 26, 1914 – January 7, 2000) was an American quality consultant, aeronautics engineer, author, and college professor most notable for his contributions in the fields of industrial problem solving, product reliability, and quality engineering, particularly the creation and development of the "Red X" concept. Shainin (pronounced SHAY-nin), founder of the technical-problem-solving company Shainin LLC, is responsible for the development of over 20 statistical engineering techniques that have become the core of the "Shainin System" for quality and reliability improvement.