Robert John Downey Jr., born on April 4, 1965, in New York City, is one of the most celebrated and commercially successful actors of his generation, with his leading film roles grossing over $14.3 billion worldwide. Known for his remarkable versatility and a career defined by spectacular highs, devastating lows, and a triumphant resurgence, Downey has earned an Academy Award, a Daytime Emmy, three Golden Globes, and two British Academy Film Awards. He was named the highest-paid actor in the world annually from 2013 to 2015, and in 2025, The Independent recognized him as one of the greatest film actors of the 21st century.

Born into a filmmaking family, Downey made his acting debut at just five years old in his father Robert Downey Sr.'s film Pound (1970), beginning an unconventional childhood steeped in the counterculture of independent cinema. He rose to prominence in the 1980s as a member of the Brat Pack, appearing in the cult classic Weird Science (1985) and delivering a critically acclaimed performance in Less than Zero (1987). His portrayal of the legendary silent film star in Chaplin (1992) earned him the BAFTA Award for Best Actor and his first Academy Award nomination, cementing his status as a dramatic force. However, his career was nearly derailed by a well-documented battle with substance abuse, which led to multiple arrests and a prison sentence in the late 1990s.

Downey began his comeback with a Golden Globe-winning stint on the television series Ally McBeal in 2000, though he was dismissed from the show in 2001 following further drug-related arrests. After entering a court-ordered rehabilitation program, he achieved sobriety in 2003, marking a turning point in his life and career. He revitalized his professional trajectory with the release of the jazz-pop album The Futurist (2004) and, more significantly, by embodying the iconic role of Tony Stark in Iron Man (2008). This performance launched the Marvel Cinematic Universe and made him a global superstar, a role he would reprise in nine subsequent MCU films. His versatility was further showcased that same year with a comedic turn in Tropic Thunder, which earned him a second Academy Award nomination, and in 2009 he took on the title role in Sherlock Holmes, earning a Golden Globe nomination for his portrayal of the famed detective.

In a career marked by constant reinvention, Downey earned his first Academy Award for Best Supporting Actor for his portrayal of bureaucrat Lewis Strauss in Christopher Nolan's epic Oppenheimer (2023). He continued to challenge himself, earning a Primetime Emmy nomination for the miniseries The Sympathizer in 2024 and making his Broadway debut in the title role of Ayad Akhtar's play McNeal. In a surprising turn, he is set to return to the Marvel Cinematic Universe, this time as the villainous Doctor Doom in Avengers: Doomsday (2026). Beyond acting, Downey has been married to film producer Susan Downey since 2005, with whom he co-founded the production company Team Downey, and he has three children. His journey from troubled prodigy to Oscar-winning elder statesman of Hollywood has made him a symbol of resilience and artistic excellence.