Niall Macfarlane Mackenzie (born 19 July 1961) is a Scottish former professional motorcycle road racer. He competed in Grand Prix motorcycle racing between and .
Mackenzie, who hails from Fankerton, near Denny, Stirlingshire; won the British Superbike Championship three times from 1996 to 1998 with the Rob McElnea-run Yamaha team, and the British 250cc and 350cc titles twice earlier in his career. He had a long career in the Grand Prix motorcycle racing circuit, debuting in in the 250cc class. He moved up to the 500cc class in on a Suzuki before spells on Honda and Yamaha motorcycles. He was 4th in the championship in 1990, and finished in the top 10 in the championship on five other occasions. His final racing season was the 2000 British Superbike series, although he did a farewell one-off at Knockhill in 2001 and stood in for the injured Yukio Kagayama at Donington Park in 2003.
In 1991, Mackenzie briefly competed in car racing, driving the #1 Celebrity car at Knockhill in that year's Honda CRX Challenge. In a rain-affected race, he was punted off at the first corner and his comeback drive was halted when he slid off at the last corner and slammed into the tyre barrier.
Mackenzie co-owns Mackenzie Hodgson Insurance, works in motorcycling media and instructs on track days around the UK and Europe.
Mackenzie has two sons; Tarran, who competes in the World Superbike Championship, and Taylor, who competed in Superstock 1000 before his retirement from competition after the 2021 season. Taylor won the British Superstock 1000cc Championship in 2016. Tarran won the British Supersport Championship in 2016 and the British Superbike Championship in 2021.
Points system from 1969 to 1987:
Points system from 1988 to 1991:
Points system in 1992:
Points system from 1993 onwards:
() (Races in bold indicate pole position; races in italics indicate fastest lap)