Great Boys Colliery was a coal mine operating on the Manchester Coalfield in the second half of the 19th century in Tyldesley, then in the historic county of Lancashire, England. It was sunk on Great Boys farm, which in 1778 was described as a "messuage with eight Cheshire acres of land" on the north side of Sale Lane west of the Colliers Arms public house. It was owned by William Atkin and sold in 1855 to mineowners, John Fletcher of Bolton and Samuel Scowcroft. By 1869 their partnership was dissolved and the company became John Fletcher and Sons in 1877. Shafts were sunk for a colliery on Pear Tree Farm on the corner of Mort Lane and Sale Lane which appear in the 1867 Mines Lists and became part of Great Boys Colliery. Fletcher and Schofield were granted permission to construct a mineral