Ariana DeBose (/ˌɑːriˈɑːnə dəˈboʊz/; born January 25, 1991) is an American actress and singer. She has received various accolades, including an Academy Award, a British Academy Film Award, and a Golden Globe Award, in addition to nominations for a Tony Award and two Primetime Emmy Awards. In 2022, Time magazine named her one of the 100 most influential people in the world.

DeBose was a contestant on the sixth season of So You Think You Can Dance in 2009, where she finished in the top 20. She made her Broadway debut in Bring It On: The Musical in 2011 and continued her work on Broadway with roles in Motown: The Musical (2013) and Pippin (2014). From 2015 to 2016, she was one of the original ensemble members in Lin-Manuel Miranda's musical Hamilton, and appeared as Jane in A Bronx Tale (2016–2017). In 2018, she was nominated for the Tony Award for Best Featured Actress in a Musical for her performance as Donna Summer in Summer: The Donna Summer Musical. She has also hosted the Tony Awards in 2022, 2023, and 2024.

DeBose has also appeared in the Netflix musical comedy film The Prom (2020) and the Apple TV+ musical comedy series Schmigadoon! (2021–2023). She gained wider recognition for her role as Anita in Steven Spielberg's musical film West Side Story (2021), winning the Academy Award for Best Supporting Actress. She provided the voice of Asha in the animated film Wish (2023).

Ariana DeBose was born on January 25, 1991, in Wilmington, North Carolina. Her mother, Gina DeBose, was a middle school teacher. DeBose trained in dance at CC & Co. Dance Complex in Raleigh, North Carolina, where she also grew up. DeBose has stated that her father is Puerto Rican and her mother was White. She also has African-American and Italian ancestry.

DeBose made her television debut in 2009, when she competed on the TV series So You Think You Can Dance, making it into the Top 20. She later appeared on the soap opera One Life to Live and played Little Inez Stubbs in the North Carolina Theatre's production of Hairspray before appearing in the role of Nautica in the 2011 Alliance Theatre production of Bring It On. She also appeared in the ensemble of the New York Philharmonic production of Company, which was filmed for television. At the end of 2011, Bring It On embarked on a national tour across the United States. DeBose continued her role into the 2012 Broadway production and understudied the character Danielle.

In 2013, DeBose played Mary Wilson in Motown on Broadway, understudying the role of Diana Ross. She later joined the cast of Pippin on Broadway, playing a noble and a player and understudying the role of the Leading Player, which she ended up taking over for a short period in 2014. She can be heard playing director/choreographer Zoey Taylor in As the Curtain Rises, an original Broadway soap opera podcast from the Broadway Podcast Network.

In 2015, DeBose left Pippin to join the ensemble of the Off-Broadway musical Hamilton. The show moved to Broadway later that year. She left Hamilton in July 2016 and made a guest appearance on the TV series Blue Bloods as Sophia Ortiz. She also starred as Daphne in the thriller film Seaside. From November 2016 to August 2017, DeBose portrayed Jane on Broadway in A Bronx Tale.

In late 2017, DeBose was cast in her breakthrough role, playing Disco Donna in Summer: The Donna Summer Musical at San Diego's La Jolla Playhouse. She reprised this role in the Broadway production, which opened in April 2018. Despite mixed reviews she was nominated for the 2018 Tony Award for Best Featured Actress in a Musical at the 72nd Tony Awards. In 2018, she starred in the film Seaside directed by Sam Zalutsky.