Ken Isaacs (7 February 1927 – 8 June 2016), born in Peoria, Illinois, was an American designer.
He is known for his creation of a matrix-based modular system to build living structures.Isaacs described in 1974 how to build modular houses in a book called How to Build Your Own Living Structures.
He was head of the Design Department at the Cranbrook Academy of Arts from 1956 to 1958.
He maintained a design office and apartment in New York City between 1956 and 1972, often commuting from Bloomfield Hills, Michigan.