Leon Frank Sylvers III (born March 7, 1953) is an American singer, songwriter, disc-jockey, record producer and multi-instrumentalist. He was a member of the family group The Sylvers and became one of the most successful producers in Black music in the late 1970s to the mid-1980s through his association with Dick Griffey's SOLAR Records. Artists such as J Dilla, Dr. Dre, and Madlib have sampled songs written and produced by him.

Leon Sylvers was born on the campus of Indiana University South Bend, where his father was studying. Three days later his family moved to Memphis, Tennessee. When Sylvers was two or three, in 1956, they took the train and moved to Los Angeles "near Adams and Crenshaw," due to his father finding work there. He cites discovering Motown at around the age of seven, especially bassist James Jamerson and drummer Benny Benjamin, as his first and main musical influence. At the same time, his father taught Sylvers and his siblings four- and five-part harmony in the style of the Four Freshmen. Musical genes also ran in the family from his mother who sang opera.

Sylvers first rose to prominence in the early 1960s as a member of The Little Angels harmony vocal group featuring his siblings (Olympia, Charmaine, and James). After hearing them perform in Las Vegas in 1959, Ed Sullivan predicted they would become famous. During this time they appeared on variety shows such as Make Room for Daddy, You Bet Your Life, and The Spike Jones Show. They also toured the United States with Ray Charles.

Following their parents' divorce, Leon and his older siblings went to live with various relatives before reuniting with their mother Shirley and their four younger siblings in Los Angeles, California. His siblings and mother moved to Watts in 1965. In 1970, Leon entered the family act, which now included younger brothers Edmund and Ricky, into a local talent contest. They won that talent contest hands down due to their versatility, choreography, and harmonies. The impresario Mike Curb signed them to MGM Records in 1971 and marketed them as The Sylvers.

Leon wrote his first hit single "Wish That I Could Talk to You", which was on the family's 1972 debut album called The Sylvers. He also wrote "Fool's Paradise", "Only One Can Win", "I Know Myself", "Chaos", "So Close", and "How Love Hurts". The album was co-produced by Jerry Butler, who was widely known for his work with The Impressions as well as a successful solo career, and Keg Johnson. The following year he penned his brother Foster Sylvers' Top 10 US R&B chart single "Misdemeanor" which was a hit during summer of 1973. The Sylvers released their second album The Sylvers II the same year, with Leon writing nine of the album's 11 songs. The Associated Press praised the album for projecting "a feeling of togetherness and strength not so evident on their first album.

In 1974 The Sylvers released their final album on MGM before moving to Capitol. Leon only wrote two of the album's ten songs. At the time of the album's release The Pittsburgh Courier wrote, "They are impressive, elegantly poised, demonstrate musicianship and their sound is fresh and original."

For the next several albums, Leon would continue writing songs on his family's albums which included 1977's Top 10 US R&B chart single "High School Dance". In 1978 Leon produced The Sylvers most critically acclaimed album, Forever Yours. Prior to the album's release, The Sylvers were frequent musical guests on TV shows and earned $15–20,000 per night for performances at county fairs and amusement parks. By mid-1978, Leon left the group to become the in-house producer for Dick Griffey's SOLAR Records, where he also worked as the label's A & R director. The Los Angeles Times would later call him, "the creative genius behind the SOLAR sound."

Sylvers started his major production career with the band Lakeside on their album Shot of love which was Top 10 on Top R&B Albums. This would also be the year that Leon's association with Shalamar would begin, starting with the Disco Gardens album which included the disco classic "Take That to the Bank". 1979 would become an even bigger year. Shalamar's next album Big Fun was an even bigger smash landing at #4 on the Top R&B Albums charts and was certified gold. The first single, "The Second Time Around", was a hit record number one on both the US R&B charts and number eight on the US Top 40|Top 10. Leon also co-produced Lakeside's Rough Riders album.