Iain Robertson (born 27 May 1981) is a BAFTA award winning Scottish actor. He portrayed Lex in cult Glasgow gang film, Small Faces, though Robertson is also known for his work in the long-running children's drama, Grange Hill and The Debt Collector, also starring Billy Connolly.

Robertson featured in Steven Spielberg's Band of Brothers and played "Gash" in the cult British comedy Rab C. Nesbitt.