Ewan McGregor

as Renton

Jonny Lee Miller

as Simon

Ewen Bremner

as Spud

Robert Carlyle

as Begbie / Begbie's Father

Anjela Nedyalkova

as Veronika

Shirley Henderson

as Gail

Kelly Macdonald

as Diane

Pauline Turner

as June

Scot Greenan

as Frank Junior

James Cosmo

as Renton's Father

Irvine Welsh

as Mikey Forrester

Logan Gillies

as Simon (aged 9)

Ben Skelton

as Renton (aged 9)

Aiden Haggarty

as Spud (aged 9)

Daniel Smith

as Begbie (aged 9)

Elijah Wolf

as Tommy (aged 9)

Steven Robertson

as Stoddart

John Kazek

as Tom (Rehab Group)

Charlie Hardie

as Fergus (aged 9)

Scott Aitken

as Farmer

Gordon Kennedy

as Tulloch

Tereza Dušková

as Tourism Girl

Elek Kish

as Dozo

Lewis Gribben

as Dealer

Dominic Maccoll

as Dealer

Calum Verrecchia

as Dealer

Simon Weir

as Jailhouse

Bradley Welsh

as Doyle

Katie Leung

as Nurse

Thierry Mabonga

as Security Officer Wilson

Atta Yaqub

as Medical Student

Christopher Douglas

as Chris the Oracle

James McElvar

as Simon (aged 20)

Connor McIndoe

as Renton (aged 20)

Bryan Quinn

as Man in Music Video

Ged Hanley

as Social Club Band

Neil Thomson

as Social Club Band

Margaret Davies

as Social Club Singer

Alex Jackson

as Social Club Singer

Tom Urie

as Big Bear

Phil Coppola

as Boxing Instructor

John Bell

as Spud (aged 20)

Kyle Fitzpatrick

as Fergus

Eileen Nicholas

as Renton's Mother (archive footage)

Michael Shaw

as Tommy (aged 20)

Kevin McKidd

as Tommy (archive footage)

Lauren Lamb

as Baby Dawn (archive footage)

Devon Lamb

as Baby Dawn (archive footage)

Amy Manson

as Woman in Club

Russell Dunsmore

as Hard Guy Driver

Nebli Basani

as Hardman

Edyta Szewczyk

as Girl in Sauna

Fiori Miari

as Girl in Sauna

Pauline Lynch

as Lizzy

Christopher Mullen

as Begbie (aged 20)

Hamish Haggerty

as Young Renton

Daniel Jackson

as Young Begbie

Svetlana Yancheva

as Veronika's Mother

Emil Bonev

as Veronika's Son

Blair Flucker

as Club Patron (uncredited)

Adam James Johnston

as Club Patron (uncredited)