The Vemac RD408R (Japanese: ヴィーマック・RD408R, Hepburn: Vuīmakku RD408R) is a race car produced by the Vemac Car Company that raced in the Japanese Super GT GT300 and GT500 classes.

The RD408H was intended to be produced in small numbers and compete in races[7] but ultimately found no buyers.

The car was first introduced with R&D Sport in 2004 at the final round of the championship in Suzuka;[5] the team performed poorly, finishing 13th in the race with no points and never competed in the GT500 class again.

No RD408Rs competed in 2005; the year after, R&D Sport campaigned an RD408R in 2006, winning the Fuji GT 500 km Race.

The last race for the RD408R was the Motegi GT 250 km in 2010, with a sole RD408R campaigned by Team Mach; it notably used a Mid West Racing-tuned Porsche 911 GT3 engine as opposed to the Mugen powerplant used in previous years.