アッカド帝国のサルゴンによる征服後のアッカド時代(前2334年頃〜前2154年頃)には、イナンナともともと独立していたイシュタルを広範囲に融合させ、事実上同一視されるようになった<ref>Leick, 1998, page87</ref><ref>Collins, 1994, pages110–111</ref>。 アッカドの詩人エンヘドゥアンナはサルゴンの娘で、イシュタルと同一視したイナンナへの賛美歌を数多く書いている<ref>Leick, 1998, page87</ref><ref>Collins, 1994, page111</ref>。その結果<ref>Leick, 1998, page87</ref>、イナンナ/イシュタル信仰は急増した<ref>Leick, 1998, page87</ref><ref>Black, Green, 1992, page108</ref><ref>Wolkstein, Kramer, 1983, pages=xviii, xv</ref>。エブラの発掘調査に早くから携わっていたアルフォンソ・アルキは、イシュタルはもともとユーフラテス川流域で崇拝されていた女神だと推測し、エブラとマリの両方の最も古い文献に、女神と砂漠のポプラとの関連が証明されていることを指摘した。アルキは、イナンナ、月の神(例えばシン)、性別の異なる太陽の神(シャマシュ/シャパシュ)を、メソポタミアと古代シリアの様々な初期セム族が共有する唯一の神であると考える。彼らはそれ以外、必ずしも重なり合わない異なる神殿を持っていたのである<ref>A. Archi, ''The Gods of Ebla'' [in:] J. Eidem, C.H. van Zoest (eds.), ''[https://www.nino-leiden.nl/publication/annual-report-nino-and-nit-2010 Annual Report NINO and NIT 2010]'', 2011, p. 3</ref>。
==Worship信仰 =={{multiple image|perrow = 4|total_width = 400|caption_align = center| align = right| direction = horizontal| header = Inanna's symbol: the reed ring-post| image1 = Emblem of the Goddess Inanna.jpg| caption1 = Emblem of goddess Inanna, circa 3000 BCE.<ref>{{cite web |title=Site officiel du musée du Louvre |url=http://cartelfr.louvre.fr/cartelfr/visite?srv=car_not_frame&idNotice=9643 |website=cartelfr.louvre.fr}}</ref>| image2 = Wall plaque showing libation scene from Ur, Iraq, 2500 BCE. British Museum (libation detail).jpg| caption2 = Ring posts of Inanna on each side of a temple door, with naked devotee offering libations.<ref name = priestess/>| image3 = Inanna ring posts on the Warka vase.jpg| caption3 = On the [[Warka Vase]]| image4 = Inanna symbol and cuneiform logogram, the reed ring stalk.jpg| caption4 = [[Cuneiform]] logogram "Inanna"| footer_align = center| footer = Inanna's symbol is a ring post made of reed, an ubiquitous building material in Sumer. It was often beribboned and positionned at the entrance of temples, and marked the limit between the profane and the sacred realms.<ref name = priestess>{{cite book |last1=Meador |first1=Betty De Shong |title=Inanna, Lady of Largest Heart: Poems of the Sumerian High Priestess Enheduanna |date=2000 |publisher=University of Texas Press |isbn=978-0-292-75242-9 |pages=14–15 |url=https://books.google.com/books?id=B45PvLlj3ogC&pg=PA14 |language=en}}</ref> The design of the emblem was simplified between 3000-2000 BCE to become the [[cuneiform]] logogram for Inanna: {{cuneiform|𒈹}}, generally preceded by the symbol for "deity" {{cuneiform|[[𒀭]]}}.{{sfn|Leick|1998|p=86}}}}[[File:Couple de musiciens.jpg|thumb|upright|Ancient Sumerian [[statuette]] of two ''[[gala (priests)|gala]]'' priests, dating to {{circa}} 2450 BCE, found in the temple of Inanna at [[Mari, Syria|Mari]]]]
Gwendolyn Leick assumes that during the Pre-Sargonic era, the cult of Inanna was rather limited,{{sfn|Leick|1998|page=87}} though other experts argue that she was already the most prominent deity in Uruk and a number of other political centers in the [[Uruk period]].{{sfnm|1a1=Asher-Greve|1a2=Westenholz|1y=2013|1p=27|2a1=Kramer|2y=1961|2p=101|3a1=Wolkstein|3a2=Kramer|3y=1983|3pp=xiii–xix|4a1=Nemet-Nejat|4y=1998|4p=182}} She had temples in [[Nippur]], [[Lagash]], [[Shuruppak]], [[Zabalam]], and [[Ur]],{{sfn|Leick|1998|page=87}} but her main cult center was the [[Eanna]] temple in [[Uruk]],{{sfn|Leick|1998|page=87}}{{sfn|Black|Green|1992|pages=108–109}}{{sfn|Harris|1991|pages=261–278}}{{efn|modern-day Warka, Biblical [[Erech]]}} whose name means "House of Heaven" (Sumerian: e<sub>2</sub>-anna; Cuneiform: {{cuneiform|𒂍𒀭}} E<sub>2</sub>.AN).{{efn|''é-an-na'' means "sanctuary" ("house" + "Heaven" ["An"] + genitive){{sfn|Halloran|2009}}}} Some researches assume that the original patron deity of this fourth-millennium BCE city was [[Anu|An]].{{sfn|Harris|1991|pages=261–278}} After its dedication to Inanna, the temple seems to have housed priestesses of the goddess.{{sfn|Harris|1991|pages=261–278}} Next to Uruk, Zabalam was the most important early site of Inanna worship, as the name of the city was commonly written with the signs MUŠ<sub>3</sub> and UNUG, meaning respectively "Inanna" and "sanctuary."{{sfn|Asher-Greve|Westenholz|2013|p=42}} It is possible that the city goddess of Zabalam was originally a distinct deity, though one whose cult was absorbed by that of the Urukean goddess very early on.{{sfn|Asher-Greve|Westenholz|2013|p=42}} [[Joan Goodnick Westenholz]] proposed that a goddess identified by the name [[Nin-UM]] (reading and meaning uncertain), associated with [[Ishtaran]] in a ''zame'' hymn, was the original identity of Inanna of Zabalam.{{sfn|Asher-Greve|Westenholz|2013|p=50}}