Eurreal Wilford “Little Brother” Montgomery (April 18, 1906 – September 6, 1985) was an American jazz, boogie-woogie and blues pianist and singer. Largely self-taught, Montgomery was an important blues pianist with an original style. He was also versatile, working in jazz bands, including larger ensembles that used written arrangements. He did not read music but learned band routines by ear.

Montgomery was born in Kentwood, Louisiana, United States, a sawmill town near the Mississippi border, across Lake Pontchartrain from New Orleans, where he spent much of his childhood. Both his parents were of African-American and Creek Indian ancestry. As a child he looked like his father, Harper Montgomery, and was called Little Brother Harper. The name evolved into Little Brother Montgomery, and the nickname stuck. He started playing piano at the age of four, and by age 11 he left home for four years and played at barrelhouses in Louisiana. His main musical influence was Jelly Roll Morton, who used to visit the Montgomery household.

Early in his career he performed at African-American lumber and turpentine camps in Louisiana, Arkansas, and Mississippi. He then played with the bands of Clarence Desdunes and Buddy Petit. He lived in Chicago from 1928 to 1931, regularly playing at rent parties, and Chicago was where he made his first recordings. From 1931 through 1938 he led a jazz ensemble, the Southland Troubadours, in Jackson, Mississippi.