Thomas Brassey (7 November 1805 – 8 December 1870) was an English civil engineering contractor and manufacturer of building materials who was responsible for building a large portion of the world's railways in the 19th century. For some of these constructions he was the sole contractor but he usually worked in partnership with other contractors, particularly Peto and Betts.
Brassey arranged the building of over of railway tracks. By 1847 he had built one third of the railways in the United Kingdom and by the time of his death he had built one in twenty of the miles of railway in the world. He also built structures associated with railways - bridges, stations, etc. - and non-railway related structures. The following is an incomplete list of his projects. For the British railways the dates given are the date of the relevant Act of Parliament; for railways elsewhere and for other structures the date given is the date of the contract.
75 per cent of the total mileage, including:
Many hundreds, including:
Many, including:
Again a large number, including: