Lou Filippo (December 1, 1925 – November 2, 2009) was an American professional boxer and later boxing judge.

Lou Filippo was born in Los Angeles, California on December 1, 1925. He attended Fremont High School in South Los Angeles, and served in the Navy during World War II.

Filippo fought more than 250 amateur fights and his professional record as a lightweight was 28 wins, 9 losses and 3 draws, with 8 knockouts. He retired in 1957.^[1]

Filippo later became a referee and judge, including judging 85 world championship fights, most famously being the judge that had Marvelous Marvin Hagler the winner over Sugar Ray Leonard in April 1987 in a fight that Leonard won by split decision. He continued to judge until his death. He played a referee in the first five Rocky (franchise) films. He also had small roles in a number of other films.

Filippo was inducted into the World Boxing Hall of Fame and elected as its President in 1993.^[2] In 1997, Filippo was honored by the Cauliflower Alley Club.

After suffering a stroke, Filippo died in Los Angeles on November 2, 2009, at the age of 83.