Deggendorf is an electoral constituency (German: Wahlkreis) represented in the Bundestag. It elects one member via first-past-the-post voting. Under the current constituency numbering system, it is designated as constituency 227. It is located in southeastern Bavaria, comprising the districts of Deggendorf and Freyung-Grafenau. Deggendorf was created for the inaugural 1949 federal election. Since 2017, it has been represented by Thomas Erndl of the Christian Social Union (CSU).