An 0-6-0+0-6-0 wheel arrangement in the Whyte notation for the classification of steam locomotives was used on Garratt, Meyer and Kitson-Meyer articulated locomotives. The 0-6-0+0-6-0 wheel arrangement is effectively two 0-6-0 locomotives operating back to back. A similar arrangement exists for Fairlie and Mallet steam locomotives, but these are referred to as 0-6-6-0.
In Britain the Whyte notation of wheel arrangement was also often used for the classification of electric and diesel-electric locomotives with side-rod coupled driving wheels.
Other equivalent classifications are:
- UIC classification: C+C (also known as German classification and Italian classification)
- French classification: 030+030
- Turkish classification: 33+33
- Swiss classification: 3/3+3/3 up to the early 1920s, later 6/6