Sir Leo Finn Bernard Cussen (29 November 1859 – 17 May 1933), Australian jurist, was a Judge of the Supreme Court of Victoria.
He was a talented sportsman, and represented the University in both cricket and Australian rules football.
Cussen was admitted to the Victorian Bar to practice as a barrister in September of that year.
He continued to sit on the bench in 1924 and again later in 1931–1932, serving as Acting Chief Justice of Victoria.
Cussen was elected president of the Melbourne Cricket Club in 1907, a position he would hold until his death.