noun
landowner; landholder
A person or entity that owns land. Neutral, formal term used in legal, real estate, and everyday contexts.
彼はこの地域の土地所有者だ。
He is the landowner of this area.
土地所有者の許可なく立ち入ることはできません。
You cannot enter without the landowner's permission.
地主 often implies a landlord who rents out land, while 土地所有者 is a broader, more neutral term for anyone who owns land.
Compound of 土地 (land) + 所有者 (owner).