Sarmatia (an ill-defined ancient geographic region of Eastern Europe occupied by the nomadic Sarmatians, generally considered to include modern Ukraine, southern Russia, Belarus, parts of Lithuania as well as Poland as far west as the Vistula River)
Sarmizegetusa (the capital and the military, religious and political centre of the Dacians prior to the wars with the Roman Empire, located among the Orăştie Mountains in present-day Romania)
Sarrebourg (a commune in the department of Moselle, Lorraine, Grand Est, France); Saarburg (a city in Trier-Saarburg district, state of Rhineland-Palatinate, Germany)
Sarthe (a department of Pays de la Loire, France); Sarthe (a right tributary of the Loire in northwestern France, flowing through the departments of Orne, Sarthe and Maine-et-Loire)