Thomas Roberts (22 May 1748 – March 1778) was an Irish landscape painter.Born into a family of artists in County Waterford, he was the eldest son of architect John Roberts. Roberts, the son, would become a student of the Cork painter John Butts and landscape painter George Mullins. He was present at the Dublin Society's School in 1763 and went on to exhibit at the Society of Artists from 1766 to 1777. That year he left Ireland for Lisbon where he died the following year. After Roberts' death, his younger brother, Sautelle Roberts, adopted his first name, thus becoming Thomas Sautelle Roberts. The younger Roberts, an architect, finished some of his elder brother's paintings and became a successful artist in the early 19th century. Among Thomas Roberts' patrons were William FitzGerald, 2nd Duke of Leinster and Richard Wingfield, 3rd Viscount Powerscourt.