Seiji Ara (荒 聖治; Ara Seiji) (born May 5, 1974 in Chiba, Japan) is a race car driver.
He was the winner of the 24-hour Le Mans race in 2004, driving an Audi R8. In the same year he also raced in the Le Mans Endurance Series and Japanese GT Championship.
In earlier years he had competed in Formula Nippon (2001–2002), Japanese Formula 3 (1997–2000) and the Barber Dodge Pro Series (1995).
He made his World Touring Car Championship debut with Wiechers-Sport at the 2009 FIA WTCC Race of Japan.