7th New Zealand Parliament Changes during term Changes during term

| By_election | Electorate | Date_ | Incumbent | Reason | Winner |
|---|---|---|---|---|---|
| 1880 | Rangitikei | 8 May | William Jarvis Willis | Resignation | William Fox |
| 1880 | Waitaki | 16 June | Thomas William Hislop | Resignation | George Jones |
| 1880 | Waikaia | 21 September | George Ireland | Death | Horace Bastings |
| 1881 | Suburbs of Nelson | 11 January | Andrew Richmond | Death | Arthur Collins |
| 1881 | Southern Maori | 1 March | Ihaia Tainui | Resignation | Hori Kerei Taiaroa |
| 1881 | City of Nelson | 7 June | Acton Adams | Resignation | Henry Levestam |