The ÖBB Class 2143 is a class of diesel-hydraulic locomotives operated by Austrian Federal Railways (ÖBB) in Austria.

The locomotives have a B-B wheel arrangement, and are powered by SGP T12c diesel motors.

[2] They are equipped with a Voith hydraulic transmission.

A total of 77 locomotives, numbered 2143.001 to 2143.077, have been built by Simmering-Graz-Pauker.

[3] Locomotive 2143.21 is operated by the Stauden-Verkehrsgesellschaft (SVG).