Falz is the son of Femi Falana, a Nigerian human activist and lawyer. He was called to the bar in 2012 after graduating from the Nigeria Law School, AbujaFalz was born in Lagos State, South-Westen Nigeria to renowned lawyers Femi and Funmi Falana. He completed his basic and secondary school education at St. Leo’s Catholic Primary School, Ikeja and Olashore International School, Osun State respectively. He is an alumnus of the University of Reading after graduating with an LLB honors degree in Law

Falz started music as a hobby while in secondary school. He formed a music group with a friend called "The School Boys". In 2009, while in high school, he released a compilation of some of his recordings as a mixtape titled Shakara: The Mixtape.

In 2011, Falz released a single titled "Waz Up Guy" before he went on to release "High Class" and "Currency" which gained him grounds in the Nigerian music industry.

On January 2, 2014, Falz was listed in tooXclusive's "Artistes To Watch in 2014".On 30 May 2014, Falz released his debut studio album titled Wazup Guy which was received to critical acclaim among music critics. In 2015, Falz was nominated in the "Best Collaboration of The Year" category at the 2015 Nigeria Entertainment Awards for his chart-topping single titled "Marry Me". On 31 January 2015, he released a single titled "Ello Bae" which won him a nomination in the "Best Street Hop Artiste of The Year" category at The Headies 2015. On 3 November 2015, he announced the release of his second studio album titled Stories That Touch which was later released on 17 November 2015.

In 2016, Falz won "Best Actor in a Comedy Movie/Series" at the 2016 Africa Magic Viewers Choice Awards for his role as Segun in Funke Akindele’s TV series Jenifa's Diary. In June of 2016, Falz was voted the winner of the "Viewer's Choice Best New International Act" category at the 2016 BET Awards. On October 27, 2016, Falz collaborated with Simi to release Chemistry, a 7-track EP solely produced by Sess. The EP was released after he had previously worked with Simi on two singles titled "Jamb Question" and "Soldier".
Falz describes his style of music as "Wahzup music". It is the fusion of comic lyrics with the contemporary hip-hop in a faux Yoruba accent. On 18 November 2014, Falz was ranked #9 on notJustOk's list of "The 10 Most Gifted Rappers In Nigeria 2014" stating that, “Falz’s ability to maintain a thought and get his point across in 16 barz while switching accents, infusing funny punchlines and delivering all of it in a way that makes the listener follow along is nothing short of impressive”.