Cognomen Delellis (Delellis 
) , across the world, is a rare family name. The last name Delellis is habitual in Argentina, where it is a rare surname, the United States, and Canada. In absolute terms, it is commonest in the United States, Argentina, and Italy. Very seldom, Delellis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Delellis | Italy, United States, Peru, Canada, Argentina |
| tony delellis American football college coach (1916-2003), US (b. 1916) |
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| ronald a delellis researcher |
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| pietro delellis researcher |
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