From TVTropes:
Early in his career he had trouble finding roles as Englishmen because casting directors thought his Italian heritage made him look too "foreign". As a result, he's played Germans, Italians, French, Arabs, Chinese...it's probably easier to mention ethnicities he hasn't played.
Let's go through Christopher Lee's appearances in order.
- Charles in Corridor of Mirrors - French.
- Pirelli's assistant in One Night With You - Italian.
- A spear carrier in Hamlet - Danish.
- Jonathan Blair in Penny and the Pownall Case - British.
[more roles with nationalities already mentioned above]
- Detective Holt in Valley of Eagles - Swedish.
- Spanish Captain in Captain Horatio Hornblower R.N. - Spanish.
- Chariot driver in Quo Vadis - ancient Roman.
- Joseph in The Crimson Pirate - probably British or Spanish?
- Russian agent in Top Secret - Russian.
- Sir Felix Raybourne in Paul Temple Returns - British.
- Slave dealer in Babes in Baghdad - Iraqi?
[more roles with nationalities unknown or already mentioned above]
- Karaga Pasha in Storm Over the Nile - Egyptian?
- John Preston in Alias John Preston - British.
- General von Linbeck's aide in Private's Progress - German.
[a couple of roles with nationalities unknown but probably already mentioned above]
- Manolo in The Battle of the River Plate - Uruguayan.
[more roles with nationalities already mentioned above]
- Count Dracula in Dracula - Romanian.
[more roles with nationalities already mentioned above]
- Kharis in The Mummy - ancient Egyptian.
[more roles with nationalities already mentioned above]
- Prof. Alan Driscoll in The City of the Dead - American.
[more roles with nationalities already mentioned above]
- Chung King in The Terror of the Tongs - Chinese.
- ...
A quick scan down the list also gives me German, Pakistani, and Chinese, among doubtless several others.