187 series
The following rail vehicles are designated as the 187 series :
- Narrow gauge railcar of the Deutsche Reichsbahn, see DR class 187
- Diesel railcars of the Harz Narrow Gauge Railways, see Harz Narrow Gauge Railways # Triebfahrzeuge
- AC locomotives , which are optionally available with a diesel auxiliary engine, see Bombardier Traxx # 187 series