Sundew was a large electrically powered dragline excavator used in mining operations in Rutland and Northamptonshire in the United Kingdom.

At the time of its construction Sundew was the largest walking dragline in the world, weighing 1,675 long tons (1,702 t).

With a reach of 86 metres (282 ft) and a bucket capacity of 27 long tons (27 t) the machine was able to move a substantial amount of material in a relatively short period.

At a cost of £250,000 and taking two years to complete, it was decided that dismantling, moving and reconstructing the machine was not a viable option, and so over an eight-week period in 1974 Sundew walked 13 miles (21 km) from its home in Exton Park near the village of Exton in Rutland to a site north of Corby.

As part of a major restructuring of British Steel in the late 1970s Corby Steelworks was closed down, and there was no longer any need for a large dragline to assist in the recovery of iron ore. On 4 July 1980 Sundew walked to its final resting place and the huge boom was lowered onto a purpose-built earth mound.