Template:New Zealand by-elections during the 39th Parliament
The following table contains the by-elections that have occurred during the term of the 39th Parliament.
| Electorate and by-election | Date | Incumbent | Cause | Winner | |||
|---|---|---|---|---|---|---|---|
| Christchurch Central | 1979 | 18 August | Bruce Barclay | Death | Geoffrey Palmer | ||
| Northern Maori | 1980 | 7 June | Matiu Rata | Resignation | Bruce Gregory | ||
| Onehunga | 1980 | 7 June | Frank Rogers | Death | Fred Gerbic | ||
| East Coast Bays | 1980 | 6 September | Frank Gill | Appointed as Ambassador to US | Gary Knapp | ||