Henning Webb Prentis Jr. (July 11, 1884 - October 29, 1959) was an American industrialist, known as president of the Armstrong Cork Company, president of the National Association of Manufacturers, and recipient of the Henry Laurence Gantt Medal in 1956.

[2] He was born and raised in St. Louis, Missouri, attended Central High School in St. Louis graduating in 1901, and obtained his AB from the University of Missouri in 1903[3] After his graduation in 1903 he started his career in industry.

In 1907 he joined the Armstrong Cork Company in Lancaster, Pennsylvania, where he worked his way up to First Vice President in 1933.

In 1956 the American Management Association and the ASME awarded him the annual Henry Laurence Gantt Medal for distinguished achievement in industrial management as a service to the community.

"[4] In a 1943 address to the University of Pennsylvania entitled The Cult of Competency (later reprinted as Industrial Management in a Republic) Prentis described what has become known as The Prentis Cycle in which, he asserted, "popular self-government ultimately generates disintegrating forces from within", as: In a 1946 book, Prentis renamed one stage of the cycle and added two stages.