Last name Eochaidh (Eochaidh 
) , around the globe, is a very rare cognomen. The cognomen Eochaidh is habitual in Ireland, where it is a rare surname, South Africa, where it is an extremely rare surname, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Eochaidh | United Kingdom, Ireland, South Africa |
| eochaidh o heoghusa Irish poet (b. 1567) |
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| eochaidh ua floinn Irish poet |
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| marc mac eochaidh Irish hurler, IE (b. 1998) |
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