SW3 may refer to:

• Samurai Warriors 3
• SW postcode area
• Chelsea, London
• Episode III – Revenge of the Sith

• Munja i Grom
• Munja i grom
• Munjal
• Munje!
• Munjeong
• Munjeong (disambiguation)
• Munjeong-dong
• Munji, Afghanistan
• Munji (disambiguation)
• Munji Mumemura
• Munjong (disambiguation)
• Munjong of Koryo
• Mun Joon
• Munjuku II Nguvauva
• Munjuku Nguvauva II
• Munjuluru
• Mun Jun
• Munjung-dong
• Munkacs Castle
• Munkacsi
• Munkacsy
• Munkacsy (crater)
• Munkalif Abbey
• Munka-Ljungby
• Munka mine