Masao Suenaga

is a retired Japanese professional drifting driver. He is the younger brother of Naoto who both were taught by Nobushige Kumakubo.

Suenaga began his motorsport career racing minibikes in the Kyūshū area, later winning a title. Following this, his motorcycle racing career ended at the age of 20 caused by injuries. As Naoto was involved in the 'Tono Club' hashiriya group (which one of the members included Katsuhiro Ueo), he also became involved which he was taught how to drift by Naoto. Masao later joined the 'Gowasu?' hashiriya group.

Suenaga has been competing in the D1 Grand Prix series since . In 2002 and , he was the youngest driver to compete in the top 16 and he was soon picked up by RE Amemiya a renowned tuner of rotary powered cars. So he switched from his Nissan Silvia to a Mazda RX-7 (FD3S) went from strength to strength. The Silvia would be driven by Naoto until he became one of the Kumakubo led Team Orange drivers. Masao took his first win in 2005 and went on to place second overall. He had a slight lull in his performance in , but was back on form in winning twice and finishing the season in third.

Suenaga is one of the few D1GP drivers to compete the spinoff D1 Street Legal series in his own FD RX-7 winning the first two rounds of the inaugural season.

Suenaga had been with RE Amemiya for years, but left in 2016. In 2017, he was picked up by Toyo Tires GLION TRUST RACING and became teammate of Masato Kawabata. He drove Nissan GT-R (R35).From 2020, he belongs to D-MAX and works with Masashi Yokoi.

Suenaga announced his retirement from professional drifting at 2024 Tokyo Auto Salon due to personal reasons. By the time of his retirement, he have the most D1GP win without winning the championship and he holds record for the fastest time around Tsukuba circuit in D1GP car which he set in 2014.

Complete Drifting Results

D1 Grand Prix

D1 Street Legal