Great Britain and Canada are already covered in other threads. This one is
for those born in Ireland or Scotland.

Ireland:
Roma Downey (Touched by an Angel)
Edward Mulhare (The Ghost and Mrs. Muir, Knight Rider)

Scotland:
Alan Young (Mister Ed, DuckTales)

Kevin McKidd-Rome, Journeyman, and Grey's Anatomy
Elaine Cassidy-Harper's Island

Gerard Butler (Phantom of the Opera, 300, Nim's Island, The Ugly Truth) is from Scotland. Colin Mochrie (Whose Line Is It, Anyway?) was also born in Scotland but was raised (and still lives) in Canada.

Scotland: Sean Connery. His paternal grandfather was from Wexford, Ireland.
Ireland: Pierce Brosnan.

Colin Farrell - Ireland (movie star)

Gabriel Byrne - Ireland (In Treatment)

Cillian Murphy - Ireland (movie star)

Jonathan Rhys Meyers - Ireland (The Tudors)


Brian Cox - Scotland (movie star)

Ewan McGregor - Scotland (movie star)

Deborah Kerr was born in Helensburgh, Scotland

Audrey Dalton, Brenda Fricker, and Maureen O'Hara are all from Ireland.

Billy Connolly (Head of the Class) - Scotland
Craig Ferguson (Drew Carey Show, Late Late Show with Craig Ferguson) - Scotland

Bono. He's a pretty big star here.

Glenn Quinn - Ireland (Roseanne, ANGEL)