Elze (German pronunciation: [ˈɛlt͡sə] ⓘ) is a town in the district of Hildesheim, in Lower Saxony, Germany.

The municipality of Elze also comprises the villages of Esbeck, Mehle, Sehlde, Sorsum, Wittenburg and Wülfingen.

The emperor also founded a missionary diocese here, dedicated to Saints Peter and Paul which became the origin of the Bishopric of Hildesheim.

King Louis the Pious relocated the episcopal see to Hildesheim in 815, however the Lutheran parish church is still devoted to Peter and Paul and the saints are also depicted in the town's coat of arms.

The village of Wittenburg is the site of a former Augustininan canons regular monastery, established in the 14th century in the place of a former castle, maybe erected by members of the Billung dynasty as early as 805.