Ariana Grande-Butera (/.ɑːriˈɑːnə ˈɡrɑːndeɪ bjʊˈtɛərə/ ^ⓘ AR-ee-AH-nə GRAHN-day byuu-TAIR-ə; born June 26, 1993) is an American singer, songwriter, and actress. Known for her four-octave vocal range, which extends into the whistle register, she is regarded as an influential figure in popular music. Publications such as Rolling Stone and Billboard have deemed Grande one of the greatest artists in history while Time included her on its list of the world's 100 most influential people in 2016 and 2019.

Grande's career began as a teenager in the Broadway musical 13 (2008) before gaining prominence as Cat Valentine in the Nickelodeon television series Victorious (2010–2013) and its spin-off Sam & Cat (2013–2014). After signing with Republic Records, she released her debut studio album, Yours Truly (2013), a retro-inspired pop and R&B record that debuted atop the Billboard 200. Grande incorporated elements of electronic on her next two albums, My Everything (2014) and Dangerous Woman (2016), which both achieved international success, spawning the singles "Problem", "Break Free", "Bang Bang", "One Last Time", "Into You" and "Side to Side".

Grande delved into trap on the albums Sweetener (2018) and Thank U, Next (2019). The former won Grande her first Grammy Award, while the latter garnered the U.S. Billboard Hot 100 number-one singles "Thank U, Next" and "7 Rings". With the title track of Positions (2020), as well as the collaborations "Stuck with U" and "Rain on Me", she achieved the most number-one debuts in the U.S. After a musical hiatus, she explored dance on Eternal Sunshine (2024), which yielded the U.S. number-one songs "Yes, And?" and "We Can't Be Friends (Wait for Your Love)". She returned to acting with the political satire Don't Look Up (2021), and her portrayal of Glinda in the fantasy musical Wicked (2024) earned her an Academy Award nomination.

Grande is one of the best-selling music artists of all time, with estimated sales of over 90 million records. The highest-paid female musician in 2020, her accolades include two Grammy Awards, a Brit Award, two Billboard Music Awards, three American Music Awards, 39 Guinness World Records, and thirteen MTV Video Music Awards. Six of Grande's albums have reached number one on the Billboard 200, while nine of her songs have topped the Billboard Hot 100. She has worked with many charitable organizations and advocates for animal rights, mental health, and gender, racial, and LGBT equality. Her business ventures include R.E.M. Beauty, a cosmetics brand launched in 2021, and a fragrance line that has earned over $1 billion in global retail sales. She has a large social media following, being the sixth-most-followed individual on Instagram.

Ariana Grande-Butera was born on June 26, 1993, in Boca Raton, Florida. She is the daughter of Joan Grande, the Brooklyn-born CEO of Hose-McCann Communications, a manufacturer of marine communications equipment owned by the Grande family since 1964, and Edward Butera, a graphic design firm owner in Boca Raton. Grande is of Italian descent and has described herself as an Italian American with Sicilian and Abruzzese roots. She has an older half-brother, Frankie Grande, who is an entertainer and producer. Her family moved from New York to Florida before her birth, and her parents separated when she was eight or nine years old. Grande had a close relationship with her maternal grandmother, Marjorie Grande. At age 8, she sang "The Star-Spangled Banner" at the Florida Panthers' home game against the Chicago Blackhawks on January 16, 2002.

As a young child, Grande performed with the Fort Lauderdale Children's Theater, playing her first role as the title character in the musical Annie. She also performed in their productions of The Wizard of Oz and Beauty and the Beast. At age eight, she performed at a karaoke lounge on a cruise ship and with various orchestras such as South Florida's Philharmonic, Florida Sunshine Pops and Symphonic Orchestras. During this time, she attended the Pine Crest School and later North Broward Preparatory.

When she first arrived in Los Angeles, California, to meet with her managers, she expressed a desire to record an R&B album: "I was like, 'I want to make an R&B album,' They were like 'Um, that's a helluva goal! Who is going to buy a 14-year-old's R&B album?!'" In 2008, Grande was cast as cheerleader Charlotte in the Broadway musical 13.

Grande was cast in the Nickelodeon television show Victorious along with 13 co-star Elizabeth Gillies in 2009. In the sitcom, set at a performing arts high school, she played the "adorably dimwitted" Cat Valentine. She had to dye her hair red every other week for the role, which damaged it. The show premiered in March 2010 to the second-largest audience for a live-action series in Nickelodeon, with 5.7 million viewers. The role helped propel Grande to teen idol status, but she was more interested in a music career, saying that acting is "fun, but music has always been first and foremost with me."