Adrian Mutu (Romanian pronunciation: [adriˈan ˈmutu] ^ⓘ; born 8 January 1979) is a Romanian professional football manager and former player. During his playing career, he was deployed as a forward or an attacking midfielder.

Mutu started his career playing two years for Argeș Pitești and half a season for Dinamo București, before joining Inter Milan in Italy midway through the 1999–2000 Serie A. After only ten games with the Nerazzurri, he left for Hellas Verona and then Parma, for which he scored 39 goals in the next three years. His excellent form brought him a €22.5 million transfer to Chelsea and a nomination for the Ballon d'Or in 2003. Following a failed drug test, he was released and returned to Serie A to join Juventus. After the 2006 Italian football scandal and the relegation of Juventus to Serie B, Mutu decided to join Fiorentina, where he played consistently for the next five years. He then had a season at Cesena and French club Ajaccio, before returning to his native country with Petrolul Ploiești in 2014. After two more brief spells with Pune City and ASA Târgu Mureș, Mutu retired from professional football in 2016.

A controversial figure off the field, Mutu received widespread attention following a positive test for cocaine while playing for Chelsea in 2005, which resulted in his immediate release from the club, a subsequent seven-month ban from the Football Association, and Mutu later being ordered to pay £15.2 million in damages to his former employers, the largest financial penalty in FIFA history. He has unsuccessfully tried to appeal the fine numerous times, and was banned for a second time in 2010 following a positive test for sibutramine while at Fiorentina.

From his international debut in 2000, Mutu played 77 matches for the Romania national team and scored 35 goals, a joint record alongside Gheorghe Hagi. He was included in the country's squads at the UEFA European Championship in 2000 and 2008. A four-time winner of the Romanian Footballer of the Year award, only Gheorghe Popescu and Gheorghe Hagi have received the award more times, with six and seven wins, respectively.

Mutu began his professional career with Argeș Pitești and Dinamo București. He joined the latter in 1998 for the equivalent of €700,000 and won the Cupa României. At the turn of the millennium, he signed for Inter. The selling club reported the fee as $2.1 million while the buyers said it was $7.15 million, leading to an investigation by Romanian tax authorities in 2006.

Mutu made his Inter debut in Serie A on 6 January 2000 in the final minutes of a 5–0 home win over Perugia. He totalled 14 appearances and two goals in his first spell at the San Siro, with both goals in the Coppa Italia.

In 2000, Mutu was sold by Inter to Verona in co-ownership deal, for 7,500 million lire (€3,873,427). The Veneto side also signed Massimo Oddo, Mauro Camoranesi (later a teammate at Juventus), and young rising star Alberto Gilardino (later a teammate at Fiorentina) that season. As Verona faced fellow strugglers Bari on matchday 18 in February 2001, Mutu came off the bench with Verona down a man and trailing 0–1 and scored two goals, inspiring Verona to a 3–2 victory. The club narrowly avoided relegation through winning the relegation tie-breaker playoffs. In June 2001, Verona bought Mutu outright, for 5,100 million lire. (€2,633,930)

On 12 August 2003, Chelsea paid Parma €22.5m (around £15.8m) for Mutu's transfer as part of new owner Roman Abramovich's spending spree, on a five-year contract. He made his debut 11 days later, and scored the winning goal from distance in a 2–1 home victory against Leicester City, and with two in a 4–2 win at Stamford Bridge against Tottenham Hotspur on 13 September, he totalled four goals in his opening three games.