VILGELM I (Wilhelm) Gogensollern (1797.22.3 – Berlin – 1888.9.3) – Prussiya qiroli (1861-y. dan) va Germaniya imperatori (1871-y. dan). 1858 — 61 y. lari aqli zaif qirol Fridrix Vilgelm IV huzurida regent. Vilgelm I davrida Prussiyani, keyin Germaniya imperiyasini amalda O. Bismark boshqargan.