Crawshay Ironworks was a prominent ironworks facility located in Merthyr Tydfil, Wales. Established in the early 19th century, it played a significant role in the industrial revolution, particularly in the production of iron and later steel. The works were founded by William Crawshay, a key figure in the iron industry, and contributed to the growth of the local economy and infrastructure. The ironworks were known for their innovative techniques and large-scale production, which helped meet the increasing demand for iron during that period. Crawshay Ironworks eventually closed in the late 19th century, but its legacy remains an important part of Wales' industrial history.