Hamm – Unna II is an electoral constituency (German: Wahlkreis) represented in the Bundestag.

It is located in the Ruhr region of North Rhine-Westphalia, comprising the city of Hamm and the northern part of the district of Unna.

[2] Hamm – Unna II is located in the Ruhr region of North Rhine-Westphalia.

As of the 2021 federal election, it comprises the independent city of Hamm as well as the municipalities of Lünen, Selm, and Werne from the Unna district.

The constituency has been held continuously by the Social Democratic Party (SPD) since its creation.

Yellow background denotes an electorate win by a list member, or other incumbent.