Lewis Boys School, Pengam is a comprehensive school, founded in 1729 in the parish and village of Gelligaer and, later, moved to the nearby village of Gilfach, in the Rhymney Valley in South Wales.

It was founded and funded by a legacy of Sir Edward Lewis of Gilfach Fargoed in the Parish of Gelligaer, a knight, landowner and captain of industry who died in 1728.

[1] The building currently occupied by the school was opened in 2002, in Gilfach at the northern perimeter of one of its former Pengam sites.

This bridge is still used to connect the new site to a collection of sports facilities located across the road.

Both institutions during their times as grammar schools were renowned for consistently excellent standards of education and the high attainments of many of their pupils.