Last name Udaeta (Udaeta 
) , all over the world, is a rare family name. The surname Udaeta is habitual in Bolivia, where it is quite a rare surname, Spain, where it is a very rare surname, and Argentina. Very seldom, Udaeta is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Udaeta | Spain, Bolivia, Colombia, United States, Argentina |
|
josé de udaeta Castanet player, ES (b. 1919) |
|
| santiago udaeta ES (b. 1949) |
|
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| maría udaeta Bolivian politician, BO (b. 1964) |
|
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| juan de udaeta ES (b. 1955) |
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| héctor de udaeta cyclist, AR |
|
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| ricardo castresana udaeta ES |
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