Adam Noah Levine (born March 18, 1979) is an American singer-songwriter, widely known as the lead vocalist for Los Angeles pop rock band Maroon 5.

Born and raised in Los Angeles, California, Levine began his musical career in 1994, when he co-founded alternative rock band Kara's Flowers, of which he was the lead vocalist and guitarist. After the commercial failure of their only album, The Fourth World, the band split up. Later, he reformed the band and a fifth member was added to form Maroon 5. The band released their first album, Songs About Jane, which went multi-platinum in the US. Since then, they have released three more albums, It Won't Be Soon Before Long (2007), Hands All Over (2010), Overexposed (2012), and V (2014). As part of Maroon 5, he has received three Grammy Awards, two Billboard Music Awards, two American Music Awards, an MTV Video Music Award and a World Music Award.

Since 2011, Levine has served as a coach on NBC's reality talent show The Voice. The winners of the first and fifth seasons, Javier Colon and Tessanne Chin, were on his team. In 2012, he made his acting debut as a recurring character in the horror television show American Horror Story: Asylum for the series' second season. He also appeared in the film Begin Again.

As an entrepreneur, Levine launched his own eponymous fragrance line in 2013. The same year, he collaborated with Kmart and ShopYourWay.com to develop his menswear collection. He also owns a record label, 222 Records. In 2013, The Hollywood Reporter reported that "sources familiar with his many business dealings" estimated Levine would earn more than $35 million that year.

Levine has made four notable comic appearances on television. During 2007, he appeared in the 33rd season premiere of Saturday Night Live in an SNL Digital Short called Iran So Far, performing with Andy Samberg, Fred Armisen and Jake Gyllenhaal. Levine played himself while singing a humorous bridge to a love song for Mahmoud Ahmadinejad. In 2008, he performed on Comedy Central's Night of Too Many Stars. He also had a cameo on Jimmy Kimmel Live! for the night of stars and endorsed Barack Obama in the 2008 Presidential Election. In 2013, he hosted Saturday Night Live and featured alongside Kendrick Lamar on Lonely Island's digital short YOLO, which parodies the acronym for You Only Live Once.