Stephen Adam (1848–1910) was a 19th/20th-century Scottish influential stained glass designer. He was a pioneer of modern stained glass in Scotland (in terms of colour use, and black in particular). The majority of his work is in the Pre-Raphaelite style, often with a twist towards Celtic mythology, and is mainly sited in western Scotland. Although the bulk of his work is for churches he also received many secular commissions.