Shearwater Research is a Canadian company, founded in 2004 by diver and engineer Bruce Partridge, that specializes in designing and manufacturing high-performance dive computers and rebreather electronics for both technical and recreational divers. They are known for products that combine powerful decompression algorithms, intuitive user interfaces, and rugged reliability, and their devices are designed and built in Canada.

Shearwater units support advanced decompression models and are widely respected in technical diving communities for accuracy, flexibility, and ease of use.