Keith Omar Murray (born May 29, 1972) is an American rapper from New York. He is best known for being a member of the hip hop group Def Squad, which includes fellow rappers Redman and fellow Long Island native Erick Sermon. The group released their debut album, El Niño in 1998.

In 1994, Murray released his debut single "The Most Beautifullest Thing in This World" for Jive Records, which was quickly followed up by his debut album of the same name, released to critical and commercial success. His delivery has been described as "spaced out, complex, [and] multi-syllablistic".

Murray got his start in the music industry under the name MC Do Damage, but later decided to just go by his birth name.

In 1993, he was introduced to Erick Sermon of EPMD by his friend K-Solo. Sermon included Murray on his album No Pressure on the single "Hostile", with critics praising Murray's lyrical ability. His appearance on Hostile led to Murray being signed to Jive Records, and work began on his first album. Murray's debut single, The Most Beautifullest Thing in This World was released in 1994 and was a hit. The song was produced by Erick Sermon (who also provided background vocals) and peaked at number 50 on the Billboard 200 and number 3 on the Hot Rap Singles chart. Murray's debut album The Most Beautifullest Thing in This World, was named after the single and released in 1994 to widespread critical acclaim and commercial success, being certified Gold by the Recording Industry Association of America (RIAA) in August 1995. The album was also given "4 mics" by The Source.

Murray continued to enjoy a high media-profile by appearing on a Coca-Cola advertisement and as a featured guest on Mary J Blige's "Be Happy", Total's "Can't You See", R Kelly's "Home Alone" and both versions of LL Cool J's "I Shot Ya". However, his appearances in both versions of "I Shot Ya" led to brief friction with rapper Tupac Shakur, who believed that the song was a diss towards him being shot and robbed at Quad Recording Studios, regarding the timing, title, and lyrical content. Sometime in the following year, Tupac Shakur approached Keith Murray at the California House of Blues, wanting to know if the record was a diss to him. Upon questioning, Murray made it clear that the record was not about Shakur, peacefully resolving the situation. Murray has continued to publicly address this in several interviews over the following years.

Murray's second album Enigma was released on November 26, 1996, on Jive, once again to critical acclaim. The album peaked at number 39 on the U.S. Billboard 200 and reached number 6 on the R&B Albums chart. Murray also continued to work with other artists, appearing on tracks by Busta Rhymes, UGK, Redman and Jamal.

In 1998, Murray and The Def Squad released their debut album, El Niño, which peaked at number 2 on the Billboard 200 and was certified Gold by the RIAA.

Murray's third solo album It's a Beautiful Thing was released in 1998 while Murray was incarcerated for assault.