Jus could be:

• Another spelling for the Latin word for "justice", ius (iuris n.)
• A rich, lightly reduced stock (food) used as a sauce for roasted meats.
• Alternative transliteration of Yus, a letter of old Cyrillic alphabet
• Miscapitalisation of JUS , standards and standardisation body of former Yugoslavia, Federal Republic of Yugoslavia, and, today, Serbia and Montenegro