普拉苏塔古斯（英文：Prasutagus）是公元一世纪英格兰东英吉利亚地区古代爱西尼部落的国王，大约居住在今诺福克郡。他是布狄卡（Boudica）的丈夫。

普拉苏塔古斯可能是十一个在公元43年罗马人的征服后，向罗马皇帝克劳狄一世（Claudius）投降的君王之一。作为罗马的盟友，他的部落被允许保持名义上的独立，并确保他的两个女儿和克劳狄一世是他的王国的共同继承人。塔西佗（Tacitus）说他过着长久并且繁荣的生活，但他死后，罗马人忽略他的遗嘱，并掠夺他的王国。布狄卡被鞭打，她的两个女儿被强奸。所有这些导致了公元60或61年爱西尼人在布狄卡领导下的起义。

Prasutagus was king of a British Celtic tribe called the Iceni, who inhabited roughly what is now Norfolk, in the 1st century AD. He is best known as the husband of Boudica.

Prasutagus may have been one of the eleven kings who surrendered to Claudius following the Roman conquest in 43, or he may have been installed as king following the defeat of a rebellion of the Iceni in 47. As an ally of Rome his tribe were allowed to remain nominally independent, and to ensure this Prasutagus named the Roman emperor as co-heir to his kingdom, along with his two daughters. Tacitus says he lived a long and prosperous life, but when he died, the Romans ignored his will and took over, depriving the nobles of their lands and plundering the kingdom. Boudica was flogged and their daughters raped. Roman financiers called in their loans. All this led to the revolt of the Iceni, under the leadership of Boudica, in 60 or 61.