Moon Landrieu was born on July 23, 1930 in New Orleans, Louisiana, USA. He was married to Verna Satterlee. He died on September 5, 2022 in New Orleans, Louisiana, USA.
He attended Loyola University in New Orleans, where he received a bachelor's degree in business administration and a law degree. He served in the Army before establishing a law practice in 1957.
He served as a judge on the Louisiana 4th Circuit Court of Appeal until his retirement in 2000.
Served in the United States Army Judge Advocate General's Corp from 1954 to 1957.