Ill (ill) may refer to:

ILL may stand for:

Aaron Dontez Yates (born November 8, 1971), better known by his stage name Tech N9ne (pronounced "Tech Nine"), is an American rapper from Kansas City, Missouri. In 1999, Yates and Travis O'Guin founded the record label Strange Music. Throughout his career, Yates has sold over one million albums and has had his music featured in film, television, and video games. In 2009, he won the Left Field Woodie award at the mtvU Woodie Awards.

His stage name originated from the TEC-9 semi-automatic handgun, given to him by rapper Black Walt due to his fast rhyming style. Yates later applied a deeper meaning to the name, claiming that it stands for the complete technique of rhyme, with 'tech' meaning technique and 'nine' representing the number of completion.

Aaron Dontez Yates was born on November 8, 1971 in Kansas City, Missouri. He began rapping at a very early age, and would rap the letters of his name in order to remember how to spell it. He never met his father, and his mother suffered from epilepsy and lupus when he was a child, which emotionally affected him and inspired him to "search for God." He would wander around abandoned buildings with his best friend, Brian Dennis, hoping to catch a ghost on film. In 2003, Dennis was shot and killed by his girlfriend's ex-boyfriend, which further inspired Yates' search for a higher power, as well as giving him the drive to vent his frustrations in his music.

William Braunstein, better known as Ill Bill, is a Jewish American Rapper and record producer from Brooklyn, New York. Having gained notoriety in the underground hip hop group Non Phixion, Ill Bill is known for his hardcore lyrics and as the producer, founder and CEO of Uncle Howie Records. His brother Ron is also a rapper and producer, known as Necro.

Ill Bill was the main voice behind the now disbanded Non Phixion, and is currently involved with La Coka Nostra, along with Slaine, Danny Boy and DJ Lethal of House of Pain & Limp Bizkit fame. In 2004 he released his debut solo album What's Wrong with Bill? and has since released various solo mixtapes and collaborations in anticipation for his second solo record and the upcoming La Coka Nostra album.

On September 16, 2008, he released his second album on Uncle Howie Records, entitled The Hour of Reprisal. The album includes appearances from Necro, Tech N9ne, B-Real of Cypress Hill, Everlast, Bad Brains, Max Cavalera of Soulfly, Vinnie Paz of Jedi Mind Tricks, Howard Jones of Killswitch Engage, Immortal Technique and Raekwon of Wu-Tang Clan. It also features production by DJ Muggs, T-Ray, DJ Lethal, Necro, DJ Premier and Ill Bill himself.

Christopher Edward Martin (born March 21, 1966), better known by his stage name DJ Premier (also known as Preem, Premo, or Primo for short), is an American record producer and DJ, and was the instrumental half of the hip hop duo Gang Starr, together with emcee Guru. Born in Houston and raised in Prairie View, Texas, he has lived in Brooklyn, New York, for much of his professional career. Rolling Stone identified Premier as arguably Hip-Hop's greatest producer of all time.

The Source named DJ Premier one of the five greatest producers in hip-hop history, while the editors of About.com ranked him #1 on their Top 50 Hip-Hop Producers list. He also made the "Finals" in the search for The Greatest Hip-Hop Producer of All Time by Vibe. He attended Prairie View A&M University.

Premier is known for producing all of Gang Starr's songs as well as many of the Gang Starr Foundation's songs. His work also includes production for heavyweight rappers such as (alphabetic order) Apathy, Big L, Bun B, Canibus, D.I.T.C., Fat Joe, Game, Jay-Z, Kanye West, KRS-One, Lord Finesse, M.O.P., Mos Def, Nas, Rakim, Royce Da 5'9", The LOX, The Notorious B.I.G., Snoop Dogg, Xzibit, rock band Limp Bizkit, Big L, Big Daddy Kane, Ill Bill, Joell Ortiz, and pop/R&B singer Christina Aguilera, among many others.