William Michael Griffin Jr. (born January 28, 1968), better known by his stage name Rakim (/rɑːˈkɪm/), is an American rapper. He is one half of golden age hip-hop duo Eric B. & Rakim, with whom he released four albums: Paid in Full (1987), Follow the Leader (1988), Let the Rhythm Hit 'Em (1990), and Don't Sweat the Technique (1992). He also released four solo albums: The 18th Letter (1997), The Master (1999), The Seventh Seal (2009), and G.O.D.'s Network: Reb7rth (2024).

Rakim is considered a transformative figure in hip hop. He helped to pioneer the use of internal rhymes and multisyllabic rhymes, and was among the first to demonstrate the possibilities of sitting down to write intricately crafted lyrics packed with clever word choices and metaphors rather than the more improvisational styles and simpler rhyme patterns that predominated before him. Rakim is also credited with creating the overall shift from the more simplistic old school flows to more complex flows. Rapper Kool Moe Dee explained: "Rakim is basically the inventor of flow. We were not even using the word flow until Rakim came along. It was called rhyming, it was called cadence, but it wasn't called flow. Rakim created flow!"

Paid in Full was named the greatest hip hop album of all time by MTV in 2006, while Rakim himself was ranked No. 4 on MTV's list of the Greatest MCs of All Time. Steve Huey of AllMusic stated that "Rakim is near-universally acknowledged as one of the greatest MCs – perhaps the greatest – of all time within the hip-hop community". The editors of About.com ranked him No. 2 on their list of the 'Top 50 MCs of Our Time (1987–2007)'. In 2012, The Source ranked him No. 1 on their list of the "Top 50 Lyricists of All Time".

William Michael Griffin Jr. was born on January 28, 1968, in Wyandanch, New York. He is the nephew of the late R&B singer and actress Ruth Brown. He grew up in Wyandanch on Long Island and wrote his first rhyme at seven years old, about the cartoon character Mickey Mouse. He initially aspired to play professional football, and was a quarterback on his high school football team.

However, after being introduced to local DJ Eric B. by his friend Alvin Toney, he began writing lyrics to fit Eric's instrumentals and chose instead to focus on a career in music. Then known as Kid Wizard, he made his first recordings live at Wyandanch High School in the year 1985.

Rakim was initially introduced to the Nation of Islam in 1986; he later joined The Nation of Gods and Earths (also known as the 5 Percent Nation) and adopted the Arabic name Rakim Allah. He also chose to use “Rakim Allah” as his stage name, although it was most often shortened to simply “Rakim”. During his career he has been nicknamed the "God MC" because of his acclaimed status as an MC and a reference to the "Allah" in his stage name, which is the Arabic word for God.

First meeting in 1985, Eric B. and Rakim went on to release four studio albums before their separation in 1992. The duo were described by journalist Tom Terrell of NPR as "the most influential DJ/MC combo in contemporary pop music period", while the editors of About.com ranked them as No. 4 on their list of the 10 Greatest Hip-Hop Duos of All-Time. They were nominated for induction into the Rock and Roll Hall of Fame in 2011, although they did not make the final selection.

After Rakim responded to Eric B.'s search for "New York's top MC", Eric B.'s friend and roommate Marley Marl allowed them to use his home studio. The first tracks they recorded—"Eric B. Is President" and "My Melody"—were released as a single/b-side on the independent Zakia Records in 1986. After Def Jam Recordings founder Russell Simmons heard the single, the duo were signed to Island Records and began recording the album in Manhattan's Power Play Studios in early 1987.