Zem Zem, or alternatively Zam Zam, has a number of possible meanings:
- Zamzam Well is a sacred well in Mecca
- Zadi Zem Zem is a wadi in northwest Libya
- Zam Zam Cola, a soft drink by the Iranian Zam Zam Group (named after the sacred well)
- Zamzama, a cannon outside Lahore Museum, immortalized by Rudyard Kipling in his novel Kim
- Zamzam - Egyptian ocean liner sunk in the South Atlantic Ocean by the German sea raider Atlantis in April 1941.