Dr. Henry Armitage is a character of H.P. Lovecraft's, appearing in his The Dunwich Horror. He is a nice old man, given to talk about cabalistic numbers and Masonic symbols. He gave, probably posthumously, a strange collection of occult books to Miskatonic University.
- Armitage Avenue, in Chicago, is a main street in the then-hippie neighborhood.
- The Wilson family lived on Armitage at one point.
- Armitage may have been named for Thomas Armitage, founder of the American Bible Union, or for a mysterious A. Armitage, a Chicago mason who may have been the father of Alderman Edward R. Armitage. Little is known about A. Armitage, other than the fact that he was listed as a mason in Chicago in 1849.