Family name Gajardo (Gajardo 
) , all around the world, is a common cognomen. The family name Gajardo is habitual in Latin America and the Caribbean, particularly Chile, where it is quite a common surname, Paraguay, where it is quite a rare surname, and Argentina. Measured by absolute frequency, it is commonest in Chile, Philippines, and Argentina.
| VARIANT | COUNTRY |
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| Gajardo | Philippines, Paraguay, Argentina, Brazil, Chile |
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santiago gajardo Chilean politician, CL (b. 1932) |
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rubén gajardo Chilean politician, CL (b. 1936) |
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| miguel aylwin gajardo Chilean lawyer, CL (b. 1889) |
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jorge gajardo CL (b. 1936) |
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| oscar gajardo Chilean lawyer (1899-1970), CL (b. 1899) |
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jaime gajardo Chilean trade unionist, CL (b. 1954) |
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| mario baeza gajardo Chilean musician, CL (b. 1916) |
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maría eugenia mella gajardo |
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| rodolfo gajardo Chilean biologist (1947-2011), CL (b. 1947) |
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| rubén gajardo Chilean tennis player, CL (b. 1968) |
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| leo gajardo Chilean footballer, CL (b. 1968) |
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| carolina michel robles gajardo Chilean particle physicist |
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| gonzalo gajardo researcher |
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| carlos prieto gajardo researcher |
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| pedro gajardo researcher |
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