John Hardcastle Dalton Madin (23 March 1924 – 8 January 2012) was an English architect.

[2] He served in Egypt with the Royal Engineers in World War II.

Madin's work has been much neglected and was not highly regarded by the early-21st century political leadership within Birmingham.

Clive Dutton, the city's former Director of Planning and Regeneration, described Madin's Central Library as a "concrete monstrosity" (Madin's original plans were for the building to be clad in marble; the city, however, was unwilling to foot the bill so a concrete finish was used instead).

[3] A replacement, the Library of Birmingham, was opened on 3 September 2013 in Centenary Square, which resulted in the previous building being demolished, starting in early 2015.