Monkey Business is the fourth studio album by American hip hop group, The Black Eyed Peas. It was released on May 25, 2005, by the will.i.am Music Group and A&M Records. It was recorded in "two and three-month spurts" throughout 2004 while the group was on tour.

The album was certified three times Platinum by the RIAA in the U.S. and has sold over 10 million copies worldwide. The Canadian Recording Industry Association (or CRIA) has certified Monkey Business 6x Platinum, with sales of over 600,000 copies. The Australian Recording Industry Association (or ARIA) has also certified Monkey Business 6x Platinum, denoting sales of over 420,000 copies. The album's tracks earned the group four 2006 Grammy Award nominations and they also won the Grammy for Best Rap Performance by a Duo or Group for "Don't Phunk with My Heart". According to IFPI, over 2 million copies have been sold in Europe.