Cruithne may refer to:
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Cruthin
The Cruthin (; mga, Cruithnig or ; ga, label= Modern Irish, Cruithne ) were a people of early medieval Ireland. Their heartland was in Ulster and included parts of the present-day counties of Antrim, Down and Londonderry. They are also said ...
, also known as Cruithne, a people of early Ireland
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3753 Cruithne, near-Earth asteroid
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