Ralph Tresvant, aka Rizz (born Ralph Edward Tresvant Jr., on May 16, 1968 in Roxbury, Massachusetts) is an American tenor singer, best known as one of the lead singers in R&B act New Edition.

Tresvant sang lead on many of the New Edition lead singles including "Candy Girl", "Cool It Now" and "If It Isn't Love". Tresvant led the group from 1983 to 1989.

Despite the success of groupmates Bobby Brown, Bell Biv DeVoe, and Johnny Gill, Tresvant was cautious about his own solo career. Signing to MCA Records, Tresvant let his apprehension be known in several interviews.

Nevertheless, well-known producers Jimmy Jam & Terry Lewis were confident in his abilities after having worked with him on the album Heart Break. They wrote the song "Sensitivity" for him which hit #1 on the R&B charts, #4 on the Hot 100 and it went gold. His self-titled album released shortly after in 1990 and went platinum as well, topping the R&B charts. The album scored two more hits with "Stone Cold Gentleman" reaching #3 on the R&B charts and "Do What I Gotta Do" which reached #2.

Tresvant appeared in the movie House Party 2 in 1991 and the play, "The Man Of Her Dreams" in 2002. In 1993, he released his second album, It's Goin' Down. The album gave Tresvant greater involvement as he produced many of the tracks himself. However, perhaps due to limited promotion, the album failed to perform commercially as well as the debut.

In October 2004 "Sensitivity" appeared in popular videogame Grand Theft Auto: San Andreas, playing on R&B/Soul radio station CSR 103.9.

On September 18, 2004, he married Amber Serrano.

Ralph's third solo album, Rizz Wa Faire, was released March 7, 2006. The first single from the album was "My Homegirl".

Tresvant will portray Reverend Winter in the 2008 film, Mama, I Want to Sing! starring pop-R&B singer Ciara.