| Election Name: | 1973 New South Wales state election |
| Country: | New South Wales |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1971 New South Wales state election |
| Previous Year: | 1971 |
| Next Election: | 1976 New South Wales state election |
| Next Year: | 1976 |
| Seats For Election: | All 99 seats in the New South Wales Legislative Assembly 50 Assembly seats were needed for a majority |
| Leader1: | Robert Askin |
| Leader Since1: | 17 July 1959 |
| Party1: | Liberal/Country coalition |
| Leaders Seat1: | Pittwater |
| Percentage1: | 44.33% |
| Swing1: | 0.06 |
| Last Election1: | 49 seats |
| Seats1: | 52 |
| Seat Change1: | 3 |
| Leader2: | Pat Hills |
| Leader Since2: | 2 December 1968 |
| Party2: | Australian Labor Party (New South Wales Branch) |
| Leaders Seat2: | Phillip |
| Percentage2: | 42.93% |
| Swing2: | 2.09 |
| Last Election2: | 45 seats |
| Seats2: | 44 seats |
| Seat Change2: | 1 |
| Map Size: | 400px |
| Premier | |
| Before Election: | Robert Askin |
| Before Party: | Liberal/Country coalition |
| After Election: | Robert Askin |
| After Party: | Liberal/Country coalition |
Elections for the New South Wales Legislative Assembly were held in the state of New South Wales, Australia, on Saturday 17 November 1973. The result was a win for the Liberal-Country Party coalition under Sir Robert Askin, which had been in office since 1965. As of 2023, this was the first and only time the Coalition won a fourth-term in New South Wales.
The Legislative Assembly had been enlarged by three members to 99 adding the seats of Woronora, Penrith and Ku-ring-gai.
The election was held just eleven months after the Liberal/Country coalition lost the federal election after 23 years in power. Askin called an early election to take advantage of the increasing economic issues which had been attributed to the Whitlam Labor government.
Leader of the Legislative Council Neville Wran, who would become Premier at the next election moved from the unelected Legislative Council to the Legislative Assembly after the late retirement of Clarrie Earl in the seat of Bass Hill.
| Date | Event | |
|---|---|---|
| 19 October 1973 | The Legislative Assembly was dissolved, and writs were issued by the Governor to proceed with an election. | |
| 25 October 1973 | Nominations for candidates for the election closed at noon. | |
| 17 November 1973 | Polling day, between the hours of 8am and 6pm. | |
| 3 December 1973 | The sixth Askin-Cutler ministry was constituted. | |
| 4 December 1973 | Parliament resumed for business. | |
| 7 December 1973 | The writ was returned and the results formally declared. |
See also: Results of the 1973 New South Wales state election (Legislative Assembly). The Democratic Labor Party won its only lower house seat at the 1973 election following the Liberal Party's incumbent for the northern Sydney seat of Gordon — Harry Jago failed to nominate in time. Conservative voters were urged to vote for the DLP candidate, Kevin Harrold.
|}
| Seat | Pre-1973 | Swing | Post-1973 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Party | Member | Margin | Margin | Member | Party | ||||||
| Burrendong | Labor | Leo Nott | 1.8 | -5.6 | 3.8 | Roger Wotton | Country | ||||
| Gordon | Liberal | Harry Jago | N/A | N/A | 29.4 | Kevin Harrold | Democratic Labor | ||||
| South Coast | Liberal | Jack Beale | 0.9 | -2.3 | 1.7 | John Hatton | Independent | ||||
| Seat | 1971 election | 1973 redistribution | Swing | 1973 election | ||||||||||||
| Party | Member | Margin | Party | Member | Margin | Margin | Member | Party | ||||||||
| Gosford | Labor | Keith O'Connell | 2.6 | Liberal | Notional | 1.1 | +4.6 | 5.7 | Malcolm Brooks | Liberal | ||||||
| Nepean | Labor | Ron Mulock | 1.6 | Liberal | Notional | 1.9 | +1.4 | 3.3 | Ron Rofe | Liberal | ||||||