Family name Guadiana (Guadiana 
) , all around the world, is quite a rare last name. The surname Guadiana is habitual in Mexico, where it is quite a rare surname, Spain, where it is a rare surname, and the United States. Very seldom, Guadiana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guadiana | Canada, United States, Mexico, Philippines, Spain |
| armando guadiana Mexican politician, MX (b. 1946) |
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| sarah m guadiana researcher (ORCID 0000-0001-9699-6372) |
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