Tammuz may refer to:
*
Tammuz (mythology), Babylonian and Sumerian god
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Tammuz (Hebrew month), the 4th month of the Hebrew calendar
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Tammuz (Babylonian calendar), a month in the Babylonian calendar
*
Tammuz 1 or Osirak, formerly a nuclear reactor in Iraq
See also
*
Tamuz (disambiguation)
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