Germinius, born in Cyzicus, [1] was bishop of Sirmium, (today the town Sremska Mitrovica, in the territory of Srem in Serbia) [2] and a supporter of Homoian theology, which is often labelled as a form of Arianism.
Along with Valens of Mursa and Ursacius of Singidunum he was responsible for drafting the theological statement known as the Blasphemy of Sirmium in 357. [3] [4] He also appears in the Altercatio Heracliani laici cum Germinio episcopo Sirmiensi, which purports to be the minutes of a public disputation between Germinius and a Nicene layman called Heraclianus in January 366. [5] He is believed to have died in 375 or 376.