Francesco Castellacci de Villanova (born 4 April 1987 in Rome) is a professional racing driver from Italy. Francesco studied at Marymount International School, Rome and Universita' Bocconi before starting his career as a racing driver.
 Together with Federico Leo, he won the drivers title of the 2011 FIA GT3 European Championship, driving a Ferrari 458 Italia GT3.
 Castellacci began his single-seater career in late 2005, racing in the Formula Azzurra Winter Trophy. In the series' four races, all held at Adria International Raceway, he achieved two podium places to be classified in third place. In 2006, he entered the full Formula Azzurra championship, scoring 24 points to finish eighth in the final standings.
 In late 2006, Castellacci tested a Formula Three car for the first time, driving for the British team Hitech Racing at Rockingham Motor Speedway. In 2007, he took part in the full British Formula 3 Championship season, racing alongside Australian driver John Martin at Alan Docking Racing. Castellacci failed to score a point in the 22 races he competed in, with his best result coming in the first race at Donington Park, where he finished in fifteenth position. He also took part in the Masters of Formula 3 race held at Zolder, finishing in 26th place.
 The following year, Castellacci returned to his native Italy to compete in the Italian Formula Three Championship for Lucidi Motors. He finished the season fourth overall, taking six podium places along with a double pole position at the Monza round. The title was won by his team-mate Mirko Bortolotti.
 Castellacci continued in the series for 2009, switching teams to join Prema Powerteam. He finished in the points on eleven occasions and took a single podium position at Misano to be classified in eighth place overall. During the year, he once again took part in the Masters of Formula Three event, this time racing for Manor Motorsport. He finished the race in 30th place.
 In June 2010, Castellacci made his debut in the Porsche Supercup round at the Valencia Street Circuit, finishing in 17th position. He is also due to contest the rounds at Silverstone, Hungaroring and Monza later in the season.
 A month earlier, he also made his debut in the Porsche Carrera Cup Germany at Valencia's Circuit Ricardo Tormo, finishing in 14th place.
 In October 2009, Castellacci sampled a GP2 car for the first time during the first post-season test at Jerez. Driving for the Italian Durango team, he completed 107 laps during the course of the three-day test, recording a best time of 1:27.615 on the final day of running.
 Castellacci also took part in Formula Renault 3.5 Series testing during October and November 2009, driving cars for Draco Racing, Interwetten.com Racing and Prema Powerteam.
 For 2011, Castellacci raced in the FIA GT3 European Championship with AF Corse, sharing a Ferrari 458 with fellow Italian driver Federico Leo. The duo won the drivers' title at the final round of the season in Zandvoort.
 The following year, a switch to the FIA GT1 World Championship was in order for the Italian, who partnered Enzo Ide at AF Corse. With a best result of fifth, the duo finished 14th in the standings.
 † - As Castellacci is a guest driver, he is ineligible to score points.
 * Season still in progress.