The JGR Class 8900 was a type of 4-6-2 steam locomotive type formerly used in Japan by the Japanese Government Railways (JGR).

The first order of 24 locomotives (serial numbers 49805 - 49828) were manufactured by Brooks Works, and the second order of 12 locos (serial numbers 50535 - 50546) were manufactured by Richmond Works.

The type was originally planned to be 8600 series, and the first order of 24 locomotives arrived with numbers 8600 - 8623, but due to a change in the wheel arrangement, the numbers were changed to the 8900 series (8900 - 8923).

The second order from Richmond was originally completed with numbers 8924 - 8935.

Occasionally these engines were used on royal train duties hauling Emperor Taishō.