Joseph Houessou Gnonlonfoun (born 1943) is a Beninese politician and diplomat.
He was an associate of Albert Tévoédjrè and chaired his political party Ensemble National.
[1] Gnonlonfoun was the vice-president of the Cotonou Court of First Instance between 1970 and 1970 and substitute member of the Superior Council of Magistracy in 1973.
He was Secretary General of the Beninese Human Rights Commission (CBHD) from 1989 to 1991 and served in the National Assembly from 1991 to 1995.
He spent years working as a legal consultant for World Bank (1995-1997) and the Inter-Parliamentary Union in Geneva (1996-1998).