The BB 63000 is a diesel-powered centre cab freight shunting locomotive used by French rail operator SNCF.

First introduced in 1953, various batches, with increasingly more powerful engines, were built up till 1964.

[1] The first batch of 72 locomotives, numbered BB 63001–BB 63072, were powered by Sulzer 6LDA22B engines developing 440 kW (590 hp).

The third batch was introduced in 1959[2] and consisted of 20 locomotives, BB 63109–BB 63128, had the same engine but uprated to 535 kW (717 hp).

The final batch of 55 locomotives, BB 63196–BB 63250, was introduced in 1962[2] fitted with the 6LDA22E of 550 kW (740 hp).