Louis Herman Marrero (July 17, 1847 – February 26, 1921) was a prominent American soldier, politician, businessman, banker, chief of police, and landowner.

His siblings were Alonso, F. William, Eugene C. and Frank G.[3] His paternal great-grandparents were Spanish settlers, Bartolomé Marrero and Josefa Sosa, who originated in the Canary Islands and arrived in Louisiana from Santa Cruz de Tenerife in October 15, 1778, with their daughters and other Canarian settlers.

[5] Louis H. Marrero mainly studied at the Potter Private School and the preparatory department of the Centenary College of Louisiana at Jackson.

He also fought alongside Bragg's army in the state of Kentucky, in Nashville and Murfreesboro, Tennessee (where he was wounded) and in Jackson, Mississippi.

[3] He also had many other occupations,[3] most notably as president of the Jefferson Commercial & Savings bank,[3][6] in Gretna, Louisiana, and as president of the Marrero Land and Improvement Association, Ltd.[3][6] During his administration in Jefferson Parish, he attracted companies to the region and founded stores devoted to the sale of agricultural products to benefit the local farmers.