Friedrich II von Graben, also Friedrich von Graben, the younger, was a member of the Austrian nobility who lived during the 15th century. He was Burggraf from Riegersburg.
Friedrich II von Graben was a descendent of the Von Graben von Stein family, who sprang out from the dynastie Meinhardiner; his parents were Friedrich I von Graben († 1422 at Schloss Kornberg) and Katharina von Summeregk (Sommeregg). Andreas von Graben was an older brother of him. In 1438 he got married to Elisabeth Steinwald von Fladnitz.
Friedrich II von Graben was advisor to Emperor Frederick III of Habsburg and member of the styrian Landtag. Since 1443 he owned the villages of Neudorf in der Steiermark and Pölan and parts of the villages Altendorf and Wanofezen. In 1456 he elected, together with his son Ulrich III von Graben, Lord of the Herrschaft Obermarburg. In 1461 he signed a contract in which Laibach elected to a Diocese.