The O slice of the verified A-to-Z index. Each row keeps the index discipline: the parts it was built from, the meaning, the origin type. The full index, all letters side by side, lives on the last names with meanings page, and the letter walk continues at the bottom of this page.
The verified index slice. The origin type stays on every row.
Last names that start with O, with receipts
Name
Built from
Meaning
Origin
Copy
Oakes
āc (oak) + -s
dweller by the oak
locative
Ogden
āc (oak) + denu (valley)
oak valley
locative
Olivares
olivar (Spanish, olive grove)
dweller by the olive grove
locative
Oliver
olivier (Norman French, olive tree)
son of Oliver ("the olive tree")
patronymic
Olsen
Ole (from Olaf) + -sen
son of Ole ("ancestor heir"): Danish
patronymic
Ortega
ortiga (Spanish, nettle)
dweller by the nettles
locative
Osborn
āss (god) + bjorn (bear)
son of Osborn ("divine bear")
patronymic
Owen
Eugene ("well-born"): Welsh form
son of Owen ("well-born")
patronymic
Owens
Owen + -s
son of Owen ("well-born")
patronymic
Which lanes own the O names
Computed from the live site, not guessed. These pages carry the most O-initial surnames in their banks:
Dragon names: 6 of this site’s O-initial surnames sit in its bank
The lane pages own each name’ s deep story; this page owns the slice. That is how an index stays honest.
The letter itself
O is the apostrophe lane. Across the verified index, S is the biggest surname initial and X the smallest. The four origin engines, trade, place, parent, description, run under every letter; the mix is what changes. This slice runs 5 patronymic, 4 locative.
The how surnames work guide walks the four engines, and the European last names page maps the suffix systems that decide which letters dominate which countries.
Last names that start with O, answered
What last names start with O?
The 9 verified rows above, each with its parts, meaning and origin. The O slice leans 5 patronymic, 4 locative. Every row is the same receipt discipline as the full index: built from, meaning, origin type.
Where do last names that start with O come from?
From the same four engines as the whole register: trade, place, parent, description. This slice runs 5 patronymic, 4 locative. The how surnames work guide walks each engine; the full A-to-Z index lives on last names with meanings.
Does this list cover every last name that starts with O?
No, and no honest index claims that. This is the verified slice: 9 rows, every receipt checked. The lane pages above carry deeper banks per tradition, and the lane pages own each name's full story. A letter page is a door, not a census.
Where these names come from.Every row is the verified A-to-Z index's O slice, re-cut by initial; the built-from, meaning and origin receipts are the index's own, unchanged. The lane map is computed from the live site's banks at build day. A row here may also appear on its lane page, which is the index's job, stated plainly. No new name data was invented for this slice. Where every name's receipt comes from →