Belle Chasse (/bɛl ˈtʃeɪs/ bel CHAYSS) is an unincorporated community and census-designated place (CDP) in Plaquemines Parish, Louisiana, United States, on the west bank of the Mississippi River.

It is widely believed that it was so named due to the richness of wildlife which the initial French colonists observed when they settled in the region.

Others say that Belle Chasse was named after a Colonel Joseph D. Bellechasse, who lived in New Orleans around the late 18th and early 19th century.

The Naval Air Station was founded in 1920 on the south shore of Lake Pontchartrain, but in 1957 it relocated to its current location (Belle Chasse, Louisiana).

In March 2009, U.S. Navy Reserve Airborne Early Warning Squadron 77 (VAW-77) relocated its six E-2C aircraft from NAS Atlanta, GA to Belle Chasse.

[23] Kirk Lepine defeated incumbent Amos Cormier III in a runoff election on Dec. 8 2018 to become Plaquemines Parish President.

Belle Chasse serves as a headquarters for the Louisiana Air Force National Guard and home of the 159th Fighter Wing.

On February 14, 1975, the body of an unidentified teenage boy was found hanging from a persimmon tree near Belle Chasse.

[25] The teenager had written a lengthy suicide note addressed "to Mom and Dad" in which he stated that he "cannot tolerate the false and empty existence I have created".

[26] Though the case received national coverage and over 300 parents of missing sons contacted the Plaquemines Parish Sheriff's office, a four-month effort to identify the body failed.