John Adrian Delaney (born June 29, 1956) is an American lawyer, politician and university administrator. He currently serves as the president of the University of North Florida and as the interim chancellor of the State University System of Florida. A member of the Republican Party, he served as mayor of Jacksonville, Florida from 1995 to 2003.
Delaney was born in Lansing, Michigan and was raised in Cincinnati, Ohio. His family moved to Jacksonville when he was sixteen. He graduated from Terry Parker High School in 1974 and attended the University of Florida, where he joined Delta Upsilon fraternity and received a B.A. and a law degree. Delaney and his wife Gena married in 1980 and reside in Neptune Beach. They have four children.
Delaney passed the Florida Bar exam in 1981 and was hired by then State's Attorney Ed Austin, eventually becoming Austin's Chief Assistant State Attorney. He was Jacksonville's General Counsel for a short time; when Austin was elected Jacksonville Mayor in 1991, Delaney served as his chief of staff before running for mayor himself when Austin declined to run again in 1995.