Ma'anar ƙamus na jimlar "Babban birnin Louisiana" ita ce birni ko garin da aka keɓe a matsayin wurin zama na gwamnati da cibiyar gudanarwa na jihar Louisiana a Amurka. Babban birnin Louisiana na yanzu shine Baton Rouge, wanda ke kudu maso gabashin jihar kuma yana da manyan gine-ginen gwamnati, ciki har da Capitol na Jihar Louisiana.
