The U.S. equivalent classification level to a foreign government's level of "Restricted" is what?

The classification level of "Restricted" used by many foreign governments typically indicates that the information requires protection due to potential damage to national security if disclosed. In the U.S. classification system, the level that most closely aligns with this designation is "Confidential."

"Confidential" is the lowest level of classified information in the U.S. system, indicating that unauthorized disclosure could reasonably be expected to cause damage to national security. Therefore, it is the appropriate equivalent to a foreign classification of "Restricted." The other classification levels—Top Secret, Secret, and Unclassified—either indicate higher protection requirements or lack a classification and do not match the description of the foreign "Restricted" level.