So So Def Recordings is a record label based in Atlanta, Georgia, and owned by producer Jermaine Dupri, specializing in Southern hip hop, R&B and bass music.

The label So So Def was established in 1993 as a spin off of Dupri's production company of the same moniker, through a joint venture with Sony Music and Columbia Records. Its first act was the female R&B group Xscape, whose debut album was released in the fall of the same year and went platinum—as did their second and third albums, released in 1995 and 1998. In 1994, the label released the debut album of Da Brat, who became the first solo female emcee to be certified for platinum album sales. In 1996, Kandi Burruss (of Xscape) brought the singing group Jagged Edge to the attention of the label; their debut album, A Jagged Era, was released in 1997. So So Def later released the triple platinum debut album by Bow Wow in 2000. Other acts on the label have included: Dem Franchise Boyz, Maestro Harrell, The Ghost Town DJs, INOJ, J-Kwon, Trina Broussard, R.O.C., Anthony Hamilton.

Def or DEF may refer to:

Jonathan Smith (born January 27, 1971), better known by his stage name Lil Jon, is an American rapper, music producer, entrepreneur, and international DJ who was a member of the group Lil Jon & The East Side Boyz. Lil Jon formed the group in 1997, and the group released several albums between then and 2004. He then went solo and released a new album in 2010 called Crunk Rock.

Lil' Jon was born and raised in Atlanta, Georgia. He graduated from Frederick Douglass High School.

After working as a DJ for Atlanta night clubs, he started working for So So Def Recordings between 1993 and 2000. The group signed to the Atlanta-based Mirror Image Records and were distributed by Ichiban Records. In 1997, Lil' Jon & the East Side Boyz debuted with Get Crunk, Who U Wit: Da Album. It included singles "Who U Wit?" and "Shawty Freak a Lil' Sumthin'", the latter of which came out in 1998. Both singles charted on the Billboard Hot R&B/Hip-Hop Songs chart at No. 70 and No. 62 respectively. In 2000 Jon took part in starting up his own label BME Recordings and signed a distribution agreement with Norcross, Georgia based Southern Music Distribution. There he released his break through album titled We Still Crunk. Among the tracks on that project was the hit single "I Like Dem Girlz", which reached No. 55 on the R&B chart and No. 3 on the Hot Rap Tracks chart.

Jermaine Dupri Mauldin (born September 23, 1972), known as Jermaine Dupri or JD, is an American record producer, songwriter and rapper.

Before continuing his artistic career, Dupri opened a small store, "Rap Corna Guuds". He later formed the teen duo Kris Kross (Chris Kelly and Chris Smith) after meeting the boys at a local mall in 1991. The group's first album, Totally Krossed Out, was released in 1992 and went multi-platinum due to their singles "Jump" and "It's a Shame". He established his own record label called So So Def Recordings in 1993. Shortly after he discovered female R&B group Xscape at a festival in Atlanta and signed them to the newly minted label. Hummin' Comin' at 'Cha and went platinum. During the same year, on Yo! MTV Raps he met Chicago rapper Shawntae Harris, A.K.A. Da Brat through Kris Kross, signed her to his label So So Def Recordings, and released her debut Funkdafied (1994) which went Platinum. His finances were not hindered by a distribution deal made with Columbia Records in 1993.

Kris Kross was an American rap duo of the 1990s comprising Chris "Mac Daddy" Kelly and Chris "Daddy Mac" Smith. The duo are best known for their hit 1992 song "Jump", which was #1 on the Billboard Hot 100 for eight weeks and was certified double platinum as a single. Kris Kross was also noted for their fashion style, which consisted of wearing their clothing backwards. The duo sung the Rugrats Rap for Nickelodeon in 1993.

Atlanta natives Kelly (born August 11, 1978) and Smith (born January 10, 1979) were discovered in 1990 by 18-year-old Jermaine Dupri at an Atlanta shopping mall. Along with Dupri they signed a deal with Ruffhouse Records, and recorded their debut album Totally Krossed Out. Entirely produced by Dupri, Totally Krossed Out, was released March 31, 1992 and sold four million copies in the U.S. It included the hit single "Jump", which topped the Billboard Hot 100 for eight weeks.

The duo landed a spot on Michael Jackson's 1992 Dangerous World Tour, as well as a cameo appearance on Jackson's "Jam" music video. The music videos from their own album also experienced major success. The video for "Jump", directed by filmmaker Rich Murray went to No. 1 on MTV and sold over 100,000 copies as a VHS 'video single' and the video for their followup single "Warm It Up", also directed by Murray won a Billboard video award for "Best New Artist". In addition to this, they also made appearances in the music videos for Run-D.M.C.'s "Down with the King" and TLC's "Hat 2 Da Back". They were also featured in an episode of A Different World, and the closing musical act on May 29, 1992 episode of In Living Color.