Dieburg (German pronunciation: [ˈdiːˌbʊʁk] ⓘ) is a small town in southern Hesse, Germany.

Therefore, Dieburg refers to the castle of the people, located in the centre of the medieval town.

The town's centre largely consists of historical timber-framed houses from medieval times.

The Dieburg Museum, located in the Fechenbach stately home, displays archeological findings.

Dieburg is situated north of mountain range Odenwald in southern Hesse.