Rum Sodomy and the Lash - The Pogues -
Fogarty's Cove - Stan Rogers
The Real Donovan - Donovan
Odetta - Odetta
Farewell, Angelina - Joan Baez
Tall Tails - Old Blind Dogs
Chemins de Terre - Alan Stivell
Below the Salt - Steeleye Span
Irish Heartbeat - Van Morrison and the Chieftains
A Maid that's Deep in Love - Pentangle
Folk Songs from Old Russia - Ivan Rebroff

Gee that was really hard to do and I still listed one too many and left others just as deserving off the list.
Best American Folk Song by an English Artist - Rock Island Line by Lonnie Donegan with Rory Gallagher on guitar. It smokes.