TU7 (ТУ7) - Soviet, later Russian diesel locomotive for gauge 750 mm (2 ft 5+1⁄2 in) – 1,067 mm (3 ft 6 in).

The TU7 (ТУ7) was developed in 1971–1972 at the Kambarka Engineering Works to replace the aging locomotive classes TU4 (ТУ4) and TU2 (ТУ2).

The D4H 1,000 mm (3 ft 3+3⁄8 in) and 9 locomotives D4Hr for standard gauge 1,435 mm (4 ft 8+1⁄2 in), also known as the TU7 - TU7A (ТУ7 - ТУ7А) diesel locomotive,[1] is a series of diesel locomotives currently used on the Vietnamese railway network.

[1] The series was originally procured from the Soviet Union after the Vietnam War.

This diesel locomotive-related article is a stub.