Greenstone TV (or simply Greenstone) is a New Zealand-based television production company who produce factual, entertainment, drama and documentary television programs.

Greenstone was founded in 1994 by John Harris.

In December 2013, Greenstone was purchased by Australian company CJZ (Cordell Jigsaw Zapruder)[1] creating an independent international production group.

[2] Greenstone’s Chairman is Richard Driver, appointed in 2017.

[3] Notable programs produced by Greenstone include long-running factual series Motorway Patrol,[4] Highway Patrol, Neighbours at War,[5] Border Patrol, Dog Squad and Coastwatch.