Constructor may refer to:
- Constructor (object-oriented programming), object-organizing method
- Constructor (video game), a 1997 PC game by Acclaim, the prequel of Constructor: Street Wars
- Constructors (Formula One), person or group who builds the chassis of a car in auto racing, especially Formula One
- Constructor (software), a software product by Graphisoft used to schedule and estimate buildings
- Constructor Group AS, a Norwegian-based group specialising in shelving, racking and storage systems