Prime Minister Benjamin Netanyahu approved the appointment of Yehuda Eliyahu on Monday.
A long-time associate of Smotrich, Eliyahu previously headed the Settlement Administration within the defence ministry, where he oversaw the largest Israeli land grab in the West Bank in recent memory.
His selection was approved last week by a public appointments committee, though not unanimously.
The committee’s legal adviser opposed the move, arguing that Eliyahu’s decades-long personal relationship with Smotrich posed a conflict of interest.
The Israel Land Authority oversees around 92 percent of state land - roughly 20 million dunams - and manages a budget worth billions of shekels. It plays a central role in land allocation for housing, infrastructure and development projects, and is also involved in administering land in Israeli settlements in the West Bank.