Louis Albert Cottrell Jr. (March 7, 1911, New Orleans – March 21, 1978, New Orleans) was a Louisiana Creole jazz clarinetist and tenor saxophonist. He was the son of the influential drummer Louis Cottrell, Sr., and grandfather of New Orleans jazz drummer Louis Cottrell. As leader of the Heritage Hall Jazz Band, he performed at the famous Carnegie Hall in 1974.

Louis Cottrell was born into an upper-class Creole musical family. His father, Louis “Old Man” Cottrell, Sr., was a famed drummer, and cornetist Manny Perez was his godfather. The young Cottrell grew up around such great musicians as Barney Bigard, John Robichaux, and A.J. Piron. Cottrell studied clarinet under Lorenzo Tio Jr. and Bigard. He began his career in the 1920s with the Golden Rule Orchestra, and then in 1925 played with Paul “Polo” Barnes. Later in the 1920s he worked with Chris Kelly and Kid Rena, then in 1929 found work on the riverboat SS Island Queen with Lawrence Marrero‘s Young Tuxedo Brass Band and Sidney Desvigne.