Wadj can refer to:

• The Egyptian Pharaoh Djet.
• The Ancient Egyptian word for papyrus.
• An Ancient Egyptian hieroglyph, the papyrus stem.

• Siwek
• Si Wen
• Siwe-Palar-Khuppak
• Siwert Öholm
• Si Wichai
• Si Wilai
• Siwinaqucha
• Siwinqani
• Siwinqani (Arque)
• Siwinqani (Chuquisaca-Potosí)
• Siwinqani (disambiguation)
• Siwinqani (Mizque)
• Siwinqani (Potosí)
• Siwinqani (Tapacarí)
• Siwi people
• Siwis
• Siwi Sukma Adji
• Siwki (Easter tradition)
• Siwki wielkanocne
• Siwoo
• Siwu
• S. ix
• Six4Three
• SIX60
• Six60 (2)