Eileen Nicholas (born 1946 in Glasgow, Scotland) is a Scottish actress best known to audiences as Mark Renton's mother in Trainspotting (1996) and T2 Trainspotting (2017). Beyond film, where her credits also include Bomber (2009), she has an extensive stage career at venues such as the Old Vic, Donmar Warehouse, Young Vic and Royal Court, and won a Time Out Theatre Award for her role in Request Programme. She continues to work regularly in British television, most recently in the series The Hack (2025).
Eileen Nicholas appeared in seven episodes of the television series The Hack in the role of Isobel Hulsmann.
The actress performed in the production National Theatre Live: The House of Bernarda Alba in the role of María Josefa and appeared in an episode of the series Casualty.
