The Quarren are an industrious and technologically advanced species native to the planet Quarra in the Delta Quadrant.
Their ships used warp technology and tractor beams, the Quarren also use subspace mines. Quarren systems require a high level of supervision and involve little automation, which is unique for a warp capable species. The Quarren make use of a multi-species workforce, many of which they acquire through abduction because, their homeworld suffers from a severe manpower shortage. They make use of memory alteration to make their captured workers more productive and less likely to escape. (VOY: "Workforce, Part I" and Part II)