Indian locomotive class WDS-4
A WDS-4 preserved at Valsad Railway station
Type and origin Power type Diesel-hydraulic Builder Chittaranjan Locomotive Works Build date 1967–1990 Total produced WDS-4: 27 WDS-4A: 5 WDS-4B: 450+ WDS-4C: 7 WDS-4D: 120+ Total: 662 Rebuilder BLW
Specifications Configuration: ​  • Whyte 0-6-0DH  • UIC C Gauge 1,676 mm (5 ft 6 in) Loco weight 60 tonnes (59 long tons; 66 short tons) Fuel type Diesel
Performance figures Maximum speed Mainline gear: 60–65 km/h (37–40 mph) Shunting: 25–38 km/h (16–24 mph) Power output 600–700 hp (450–520 kW) Tractive effort Mainline gear: 9,500–16,700 kgf (93,000–164,000 N; 21,000–37,000 lbf) Shunting: 18,000 kgf (180,000 N; 40,000 lbf)
Career Operators Indian Railways Numbers 19057…19732 Locale All over Indian Railways, some leased/sold to private industry

The WDS-4 is a class of diesel-hydraulic locomotive used by Indian Railways for shunting and departmental operations. The model name stands for broad gauge (W), Diesel (D), Shunting (S) engine. The WDS-4 was once used all over India but most have now been scrapped or condemned from active service.

• Rail transport in India § History
• Locomotives of India
• Rail transport in India

• "Diesel Locomotive Classes – Broad Gauge". Archived from the original on 2010-01-10.
• "Diesel and Electric Locomotive Specifications". Archived from the original on 2010-04-20.
• "Loco Roster Database". Archived from the original on 2018-01-09.