Surnames Categorized "uncertain etymology"

This is a list of surnames in which the categories include uncertain etymology.
Acquarone Italian
Meaning uncertain, possibly from a place name or an occupation derived from Italian acqua "water".
Arias Spanish
Possibly derived from a medieval given name, of Germanic origin.
Dalca Romanian
Meaning uncertain.
García Spanish
From a medieval given name of unknown meaning, possibly related to the Basque word hartz meaning "bear". This is the most common surname in Spain.
Laitinen Finnish
Finnish surname of unknown origin.
Muñoz Spanish
Patronymic derived from the medieval Spanish given name Muño, from Latin Munnius, possibly of Germanic origin.
Quesada Spanish
Habitational name from Quesada, a place in Jaén in southern Spain. The place name is of uncertain derivation; it could be connected to Old Spanish requexada meaning "corner, tight spot".
Samara Arabic
Meaning unknown.
Savona Italian
From the name of the city of Savona in northern Italy, called Savo by the Romans, of uncertain meaning.
Ureña Spanish
Probably derived from the name of Urueña, a town in the province of Valladolid, Spain, which is of unknown meaning.
Viteri Spanish, Basque
Meaning uncertain, possibly from a Basque place name.
Wuopio Swedish
Meaning uncertain, possibly referred to a dweller in a narrow bay with steep shores.