In common law systems, land tenure, from the French verb "tenir" means "to hold", is the legal regime in which land owned by an individual is possessed by someone else who is said to "hold" the land, based on an agreement between both individuals. It determines who can use land, for how long and under what conditions. Tenure may be based both on official laws and policies, and on informal local customs (insofar higher law does allow that). In other words, land tenure implies a system according to which land is held by an individual or the actual tiller of the land but this person does not have legal ownership. It determines the holder's rights and responsibilities in connection with their holding. The sovereign monarch, known in England as The Crown, held land in its own right. All land holders are either its tenants or sub-tenants. Tenure signifies a legal relationship between tenant and lord, arranging the duties and rights of tenant and lord in relationship to the land. Over history, many different forms of land tenure, i.e., ways of holding land, have been established.

A landowner is the holder of the estate in land with the most extensive and exclusive rights of ownership over the territory, simply put, the owner of land.