Jay McMullen (June 28, 1920 – March 18, 1992) was an American journalist.

He also worked as a real estate writer for the Chicago Sun-Times for many years.

From 1978 until his death 14 years later, McMullen was married to politician Jane Byrne.

Byrne served as the Mayor of Chicago from 1979 to 1983, and McMullen was a close advisor to his wife during those years.

This article about a United States journalist born in the 1920s is a stub.