塔木兹（Tammuz，叙利亚语：ܬܡܘܙ; 希伯来语：תַּמּוּז‎‎, Transliterated Hebrew: Tammuz, Tiberian Hebrew: Tammûz; 阿拉伯语：تمّوز‎ Tammūz; 阿卡德语：Duʾzu, Dūzu; Sumerian: Dumuzid）是宇宙之母伊斯塔（Istar）或阿斯塔尔（Ashetar）之子，是古巴比伦的谷神。

Tammuz (Syriac:ܬܡܘܙ‎; Hebrew: תַּמּוּז, Transliterated Hebrew: Tammuz, Tiberian Hebrew: Tammûz; Arabic:تمّوز‎ Tammūz; Akkadian:Duʾzu, Dūzu; Sumerian: Dumuzid (DUMU.ZI(D), "faithful or true son") was the name of a Sumerian god of food and vegetation, also worshiped in the later Mesopotamian states of Akkad, Assyria and Babylonia.