| A. F. Theriault & Son Ltd. | |
| Founder: | Augustin Theriault |
| Industry: | Shipbuilding and Repair |
| Services: | Vessel Construction and Repair |
| Location City: | Meteghan River |
| Location Country: | Canada |
| Num Employees: | 150–180 |
A. F. Theriault & Son Ltd is a privately owned shipyard located in Meteghan River, Digby County, Nova Scotia, Canada. It was founded by Augustin Theriault in 1938.[1] The shipyard has built a variety of marine vessels. Past projects include the Boston fireboat American United, built in 2011. A current series of vessels are Hammerhead Target Drones, remote controlled high-speed drones used to train naval units in five countries.