St. Emma Plantation, Former sugar plantation and Greek Revival house in Ascension Parish, Louisiana, USA

St. Emma Plantation is a former sugar plantation of 13,000 acres (5,300 ha) in Ascension Parish, Louisiana, centred on a Greek Revival plantation house. The house was owned by sugar planter Charles A. Kock between 1854 and 1869 and was listed on the National Register of Historic Places in 1980.

St. Emma Plantation lies in Ascension Parish, where Charles A. Kock, a sugar planter and slaveholder, owned the Greek Revival house from 1854 to 1869. In the summer of 1863 the grounds were the scene of the Battle of Kock's Plantation, a Civil War skirmish. The house was listed on the National Register of Historic Places in 1980.

The house takes its name from the St. Emma sugar plantation, and the land around it was worked as a 13,000-acre cane estate. Charles A. Kock, a prominent sugar planter and slaveholder, owned the Greek Revival house from 1854 to 1869, and the enslaved labor force he held produced the sugar that sustained it.

The house sits on private land south of the intersection of Louisiana Highway 943 and Highway 1. Note that this is an active residence, so viewing is limited to the exterior from public access points.

The house stands on the site of the Battle of Kock's Plantation, fought in summer 1863, where Union and Confederate forces clashed. The property takes its name from Emma, a member of the Kock family. Charles A. Kock owned the plantation from 1854 to 1869 and was a prominent sugar planter and slaveholder. The house was listed on the National Register of Historic Places in 1980.