William "Billy" Venturini (born April 7, 1976) is an American professional stock car racing driver and team owner. He currently co-owns Venturini Motorsports, a racing team that competes in the ARCA Menards Series, along with his father, Bill. As a driver, he competes part-time in the ARCA Menards Series East, driving the No. 25 Toyota Camry for Venturini Motorsports. He previously competed in the series either full-time or part-time from 1994 through 2007, mainly driving for the same team.

After retiring from driving in 2007, Venturini decided to turn his family team into a driver development program. Venturini would later be known for helping his team become one of the most premier driver development programs in the ARCA circuit, collecting over 50 wins in the series, including a championship in 2019.^[4][5][6] That same year, Venturini won the Cometic Crew Chief of the Year award.^[7] In 2012, Venturini, along with his family, were inducted into the National Italian American Sports Hall of Fame (NIASHF). In 2022, Venturini received media attention during the ARCA race at Kansas in May. Venturini was serving as the crew chief for Corey Heim in the race, since the original crew chief, Shannon Rursch, was attending his daughter's college graduation that weekend. On lap 57 of the race, Drew Dollar made contact with Heim exiting turn 4, causing both of them to hit the outside wall, and spin through the infield grass. During an interview with FS1 reporter Kate Osborne, Venturini showed his displeasure with Dollar, stating that "Drew wrecks all your shit when he's driving for you, and then he wrecks it all when he's racing against you." He would also state that Dollar was a "pure lack of talent."^[8] Dollar reacted to the interview a day later, by tweeting out Venturini's racing stats on Racing-Reference, with the caption saying "Guess it took this guy about 14 years to figure out he didn't need to be a race car driver."^[9]

Venturini is married to Emily, and they have twin sons, Luke and Max.^[10] His younger sister, Wendy Venturini, is currently a pit reporter for Performance Racing Network (PRN).