Nicholas Robert Cassidy (born 19 August 1994) is a New Zealand racing driver, who competes in the Formula E World Championship for the Citroën Formula E Team and in the FIA World Endurance Championship for Peugeot in the Hypercar class. He previously raced for Jaguar and Envision Racing in the series for three seasons, and finished as the runner-up during the 2022–23 and 2024-25 seasons. He has won the 2017 championship in Super GT and the 2019 championship in Super Formula.

Cassidy began his racing career in karting when he was just six years old and remained in karting till 2010. He participated in midget races from the age of eight.

After driving in Formula First championships, Cassidy started racing in the Formula Ford championships in New Zealand and Australia. In 2009, Cassidy was runner-up in the New Zealand Formula First Championship, and in 2010, he was runner-up in the New Zealand Formula Ford Championship. Both times, he was named Rookie of the year.

In 2011, Cassidy began the year for Giles Motorsport, in the Toyota Racing Series. After five podium finishes, he won two of three races on the last race weekend. He was named Rookie of the Year and finished runner-up in the championship to his teammate Mitch Evans.^{[citation needed]}

Cassidy started a few races in the Australian Formula Ford Championship, such as the ADAC Formel Masters and the Formula Abarth. He competed in five races in the Fujitsu V8 Supercar Series. In 2012, Cassidy participated in the Toyota Racing Series again, remaining with Giles Motorsport. In two consecutive weeks of 2018, Cassidy lost final-round title battles in both Super Formula and Super GT, finishing second in both series.^{[citation needed]}

In 2019, Cassidy completed the 'triple crown' in Japanese motorsport by winning the Super Formula title. He made his Formula E debut in the 2020–21 Formula E season for Envision Virgin Racing, replacing Sam Bird. He also made his debut in the Deutsche Tourenwagen Masters for a combined entry of AF Corse and Red Bull Racing, replacing Red Bull Racing Reserve Driver Alex Albon in the final round of the 2021 season at the Norisring. He drove Red Bull's Ferrari 488 GT3s for the 2022 season.

Cassidy began competing in Formula E for the Envision Virgin Racing team starting with the 2020–21 season, partnering Robin Frijns. Having failed to score during the first three races, Cassidy scored his first pole position during a wet-weather session at Rome. However, Cassidy spun out of the lead on the opening lap as a result of a software glitch, before being pushed into the wall and out of the race by Oliver Rowland. He scored points in the following rounds in Valencia and Monaco before achieving his maiden podium at the Puebla ePrix. At the next race in New York City Cassidy scored another pole and led the race until the closing laps, when a misjudged move by Jean-Éric Vergne forced the Kiwi down to fourth. He returned to the podium on Sunday, though this would be his final podium of the year, as Cassidy finished a chaotic season of Formula E 15th in the standings, 23 points behind champion Nyck de Vries.

For the 2021–22 season, Cassidy remained at Envision, once again partnering Frijns. The opening half of his season yielded little success for the New Zealander, who only took three points finishes in the first ten races. Just like the previous year, Cassidy qualified on pole pole position for the first race in New York, one he would convert into his first Formula E victory despite being involved in a multi-car pileup thanks to a sudden rain shower late in the race, as the event was aborted and countback rules were applied to the classification. He qualified on pole the following day only to be sent to the back of the grid as repairs to his car forced the team to use a fifth radiator of the season, earning Cassidy a 30-place grid penalty. Cassidy finished on the podium at London as a result of a penalty for De Vries and ended the season eleventh in the standings, four positions behind teammate Frijns.