Isabella Khairiah Hadid (Arabic: بيلا حديد;[a] /həˈdiːd/ hə-DEED; born October 9, 1996) is an American model. Throughout her career, she has made 29 appearances on international Vogue covers. In 2022, she was named Model of the Year by the British Fashion Council. Time magazine named her one of the 100 most influential people in the world on its annual list in 2023.

Born in Washington, D.C., and raised in Santa Barbara, California, Hadid began her modeling career at the age of 16. She was signed to IMG Models in August 2014, and made her New York Fashion Week debut the following month. In 2016, she was voted "Model of the Year" by industry professionals for Models.com. In 2017, Hadid broke Doutzen Kroes's record for the most Vogue September covers in one year by appearing in five international editions (China, Spain, Brazil, Australia and Arabia). One of the most successful models in the world (as of 2021), Hadid has developed a cult following of fans. Since 2018, Hadid has been one of the highest paid models in the world, earning $19 million.