The Honda S800 was a sports car that was introduced at the 1965 Tokyo Motor Show, as a replacement for the Honda S600.

Like the S600, it was available as a coupe or roadster. The 4-cylinder, 791 cc engine produced 70 hp (52 kW) at 8000 rpm, allowing it to reach 100 mph (160 km / h). It had moderate consumption, only 35 mpg (6.7 L / 100 km).