This is a list of territorial changes to the district of Helmstedt, Lower Saxony, Germany during the administrative reforms of the 1970s.
- Municipalities lost:
- to Gifhorn
- Ahnebeck
- Bergfeld
- Brechtorf
- Eischott
- Hoitlingen
- Parsau
- Rühen
- Tiddische
- to Wolfsburg
- Brackstedt
- Kastorf
- Neuhaus
- Nordsteimke
- Reislingen
- Velstove
- Vorsfelde
- Warmenau
- Wendschott
- Municipalities gained:
- from Gifhorn
- Ahmstorf
- Beienrode
- Essenrode
- Klein Steimke
- Ochsendorf
- Rennau
- Rottorf am Klei
- Uhry
- from Brunswick
- Beienrode
- Essehof
- Flechtorf
- Groß Brunsrode
- Klein Brunsrode
- Lehre
- Wendhausen