Peter Brotherhood (1838–1902) was a British engineer. He invented the Brotherhood engine used for torpedoes as well as many other engineering products. With his son he built a large engineering business in London bearing his name, Peter Brotherhood. His son Stanley moved the works to Peterborough in 1903 where their engineering business continued to grow. On 30 October 2015 Hayward Tyler Group PLC completed the acquisition of the trade and assets of the Peter Brotherhood business from Dresser-Rand Company Ltd, a Siemens-owned company.