Louis Hall Nelson (September 17, 1902 – April 5, 1990) was a New Orleans jazz trombonist. Louis Nelson was born on September 17, 1902 at 1419-21 Touro St. in New Orleans, LA. His father, Dr. George Harry Nelson, was a medical doctor. Dr. Nelson helped organize the 9th Louisiana Volunteers and served in the Spanish-American War. He was commissioned as first lieutenant. During the war he served in Cuba and also stormed San Juan Hill.