Belle Alliance is an Italianate and Greek Revival plantation house in Assumption Parish, Louisiana, U.S.A. It is the namesake of the unincorporated community of Belle Alliance. The town and the plantation are located on the east bank of Bayou Lafourche, about five miles (8 km) out of Donaldsonville.
During the 1770s, this 7,000-acre (28 km2) plot was granted to Don Juan Vives, a physician and military officer of the Spanish government. The Belle Alliance plantation house was built by a successful sugar planter Charles Anton Kock, also owner of St. Emma Plantation around 1846.