| Election Name: | New South Wales colonial election, 1869–70 |
| Country: | New South Wales |
| Flag Year: | 1867 |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1864–65 New South Wales colonial election |
| Previous Year: | 1864–65 |
| Next Election: | 1872 New South Wales colonial election |
| Next Year: | 1872 |
| Seats For Election: | All 72 seats in the New South Wales Legislative Assembly 37 Assembly seats were needed for a majority |
| Election Date: | 3 December 1869 – 10 January 1870 |
| Leader1: | Charles Cowper |
| Leaders Seat1: | (elected to Liverpool Plains) |
| Leader2: | John Robertson |
| Leaders Seat2: | Clarence (elected to West Sydney) |
| Premier | |
| Before Election: | John Robertson |
| After Election: | Charles Cowper |
The 1869–70 New South Wales colonial election was held between 3 December 1869 and 10 January 1870. This election was for all of the 72 seats in the New South Wales Legislative Assembly and it was conducted in 52 single-member constituencies, six 2-member constituencies and two 4-member constituencies, all with a first past the post system. Suffrage was limited to adult white males. The previous parliament of New South Wales was dissolved on 15 November 1869 by the Governor, Lord Belmore, on the advice of the Premier, John Robertson.
There was no recognisable party structure at this election; instead the government was determined by a loose, shifting factional system.
| Date | Event | |
|---|---|---|
| 15 November 1869 | The Legislative Assembly was dissolved, and writs were issued by the Governor to proceed with an election. | |
| 2 December to 27 December 1869 | Nominations for candidates for the election closed. | |
| 3 December 1869 to 10 January 1870 | Polling days. | |
| 27 January 1870 | Opening of new Parliament. |
|}