There are 4 places named Onion Island in Canada.
All places in the world called "Onion Island".
Wellington (4)
Windsor (4)
Havelock (3)
Centreville (3)
Sidney (3)
Borden (3)
Princeton (3)
Westport (3)
Milton (3)
Richmond (3)
Benton (3)
Saint Andrews (3)
Selkirk (3)
Tracadie (3)
Kingston (3)
Victoria (3)
Beaumont (2)
Caledonia (2)
Coleman (2)
Emerald (2)
Lloydminster (2)
Nelson (2)
Riverside (2)
Saint Vincent (2)
Swift Current (2)
Weston (2)
Benton Station (2)
Delisle (2)
Frobisher (2)
Keswick (2)