Cognomen Loyac (Loyac 
) , around the globe, is a very rare last name. The last name Loyac is characteristic of France, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and Philippines.
| VARIANT | COUNTRY |
|---|---|
| Loyac | France, Philippines, Malaysia |
| jean de loyac 11 May 1710 - (b. 1710) |
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| jean baptiste antoine françois de loyac 22 Mar 1757 Tulle - 1802 on Martinique (b. 1757) |
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| adèle julie henriette de loyac 18 Jan 1785 - 27 Mar 1858 Lyon, Rhône (b. 1785) |
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