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創于1877年，世界500強，曾長期壟斷美國長途和本地電話市場，2018年完成收購時代華納，旗下擁有HBO、Turner廣播、CNN、華納兄弟影視公司等多個全球知名媒體品牌

AT&T公司（英(ying)語：AT&T Inc.，原為American Telephone & Telegraph的縮寫，也是(shi)中文譯名(ming)(ming)美國電(dian)話電(dian)報公司由來(lai)，但近(jin)年(nian)來(lai)已不用全名(ming)(ming)），是(shi)一家(jia)美國電(dian)信公司，創建于1877年(nian)。 AT&T在近(jin)120年(nian)中，曾經過多次分(fen)拆和重(zhong)組。 AT&T也是(shi)是(shi)美國NBA聯盟圣安(an)東尼奧馬(ma)刺的球館英(ying)語名(ming)(ming)AT&T Center。

美(mei)(mei)國(guo)(guo)電(dian)(dian)話電(dian)(dian)報公(gong)(gong)(gong)(gong)(gong)司(si)有(you)(you)8個主要部門 ：貝(bei)爾(er)實驗室、商(shang)業市場(chang)集團、數據(ju)系統(tong)(tong)公(gong)(gong)(gong)(gong)(gong)司(si) 、通用(yong)市場(chang)集團 、網(wang)絡運(yun)營集團、網(wang)絡系統(tong)(tong)集團、技術系統(tong)(tong)集團、公(gong)(gong)(gong)(gong)(gong)司(si)國(guo)(guo)際(ji)(ji)集團。主要業務(wu)是(shi)：為(wei)國(guo)(guo)內國(guo)(guo)際(ji)(ji)提供(gong)電(dian)(dian)話服(fu)務(wu)。利(li)用(yong)海(hai)底電(dian)(dian)纜(lan)、海(hai)底光纜(lan)、通信衛(wei)星，可聯系250個國(guo)(guo)家和地(di)區，147個國(guo)(guo)家和地(di)區可直接撥號(hao)。提供(gong)商(shang)業機器、數據(ju)類產品(pin)和消(xiao)費類產品(pin)。提供(gong)電(dian)(dian)信網(wang)絡系統(tong)(tong)。各種(zhong)服(fu)務(wu)及租賃業務(wu)。它還為(wei)政府提供(gong)產品(pin)和服(fu)務(wu)。該公(gong)(gong)(gong)(gong)(gong)司(si)非常重(zhong)視(shi)科研和開(kai)發新產品(pin)。美(mei)(mei)國(guo)(guo)電(dian)(dian)話電(dian)(dian)報公(gong)(gong)(gong)(gong)(gong)司(si)在(zai)泰國(guo)(guo)、德(de)國(guo)(guo)、新加坡(po)等地(di)設(she)有(you)(you)工(gong)廠。在(zai)意大(da)利(li)、韓國(guo)(guo)、日(ri)本等國(guo)(guo)設(she)有(you)(you)子公(gong)(gong)(gong)(gong)(gong)司(si)或者合(he)資公(gong)(gong)(gong)(gong)(gong)司(si)。1995年9月，該公(gong)(gong)(gong)(gong)(gong)司(si)解(jie)體為(wei)三個獨立的(de)(de)公(gong)(gong)(gong)(gong)(gong)司(si)：通訊服(fu)務(wu)公(gong)(gong)(gong)(gong)(gong)司(si)、通訊設(she)備公(gong)(gong)(gong)(gong)(gong)司(si)、電(dian)(dian)腦信息服(fu)務(wu)公(gong)(gong)(gong)(gong)(gong)司(si)，并且退出個人電(dian)(dian)腦領域(yu)。AT&T的(de)(de)瓦(wa)解(jie)過程開(kai)始于1984年。在(zai)美(mei)(mei)國(guo)(guo)政府反壟斷政策的(de)(de)強(qiang)制干(gan)預下，公(gong)(gong)(gong)(gong)(gong)司(si)的(de)(de)本地(di)電(dian)(dian)話業務(wu)被(bei)分裂出去(qu)，重(zhong)新組建了7個子公(gong)(gong)(gong)(gong)(gong)司(si)，分別(bie)是(shi)：貝(bei)爾(er)太平(ping)洋(yang)公(gong)(gong)(gong)(gong)(gong)司(si)、Ameritech公(gong)(gong)(gong)(gong)(gong)司(si)、貝(bei)爾(er)西南公(gong)(gong)(gong)(gong)(gong)司(si)、貝(bei)爾(er)西部美(mei)(mei)國(guo)(guo)公(gong)(gong)(gong)(gong)(gong)司(si)、貝(bei)爾(er)大(da)西洋(yang)公(gong)(gong)(gong)(gong)(gong)司(si)、貝(bei)爾(er)南方(fang)公(gong)(gong)(gong)(gong)(gong)司(si)和Nynex公(gong)(gong)(gong)(gong)(gong)司(si)。