Alex Stewart Lloyd (born December 28, 1984) is a British former motor racing driver. Lloyd was the 2003 British Racing Driver of the Year and went on to win the 2007 Indy Lights Championship and finished fourth in the 2010 Indianapolis 500. He was known by the nickname "Pink Lloyd." Lloyd now produces music under the alias "Mr Lloyd."

Lloyd was born in Manchester, England. At the age of nine, he began kart racing in the British Super One Championship and the European championship. In 1999, at the age of fourteen, he became the British Open Champion in kart racing. In 2000, he began testing Formula Ford cars.

In 2001, he moved into Formula Ford racing, placing second at a European Championship round at Spa-Francorchamps. He also finished in thirteenth place in the prestigious Formula Ford Festival. During the winter, he raced in the Formula Renault UK Winter Series, placing third in the championship. He graduated to the main Formula Renault series in 2002, finishing ninth in the championship.

During 2003, Lloyd earned the BRCD McLaren Autosport Young Driver of the Year award. This followed a second place finish in the Formula Renault UK championship behind Lewis Hamilton and ahead of James Rossiter and Mike Conway.

In 2004, Lloyd conducted his first Formula One test in a McLaren as part of his prize for winning the Young Driver of the Year award the previous year. He was unable to compete in British Formula 3 as planned, due to funding problems. However, he carried out several tests with Alan Docking Racing and teammate Will Power. He took part in the final seven rounds of the Euro Formula 3000 series, recording one win and three pole positions.

Lloyd continued to struggle to find financial backing in 2005, only taking in two races in Italian Formula 3000 for the in order to help with car development and a one-off ride in a Formula Renault 3.5 Series event at Monaco. For the winter of 2005–06 he was signed up to drive in A1 Grand Prix for Team Great Britain, however he only undertook one mid-season drive and was never able to race the car, with the GB team opting to give veteran driver Robbie Kerr greater opportunities.

For the 2006 season, Lloyd signed with AFS Racing partway through the year to race the remainder of the whole season in the Indy Pro Series. As a last attempt at providing finance for Lloyd's career, his parents sold their house in Port Soderick in the Isle of Man. Lloyd subsequently qualified second for his first race with the team at St. Petersburg and finished his second race that weekend in third place. In July, he won the road course race at Indianapolis Motor Speedway the day before the United States Grand Prix, the first race ever won by AFS Racing. Later in the season he won the Valley of the Moon 100 for AFS Racing, held at Infineon Raceway, and went on to finish seventh in the final standings.

For the 2007 IPS season, he drove for Sam Schmidt Motorsports and promptly won the first five races of the season. He clinched the series championship with his eighth win of the season at Infineon Raceway with two races remaining in the season. During the season he shattered all league records for consecutive wins (five), wins in a season (eight), career wins (ten) and most points scored (652). He became the first person to have won on both the road course at Indianapolis Motor Speedway and also the famous two and a half-mile oval itself, until Will Power did the same in the Indycar series in 2018.