| Election Name: | 1873 Spanish general election |
| Country: | Spain |
| Flag Year: | 1873 |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | August 1872 Spanish general election |
| Previous Year: | August 1872 |
| Next Election: | 1876 Spanish general election |
| Next Year: | 1876 |
| Seats For Election: | All 383 seats of the Congress of Deputies |
| Majority Seats: | 192 |
| Election Date: | 10 May 1873 |
| Leader1: | Francesc Pi i Margall |
| Party1: | FDRP |
| Leaders Seat1: | Barcelona |
| Seats1: | 346 |
| Seat Change1: | 268 |
| Percentage1: | 90.34% |
| Swing1: | 70.39 |
| Leader2: | Cristino Martos y Balbí |
| Party2: | Independent radicals |
| Leaders Seat2: | Madrid |
| Seats2: | 20 |
| Seat Change2: | 254 |
| Percentage2: | 5.22% |
| Swing2: | 68.56 |
| Leader3: | Práxedes Mateo Sagasta (with Francisco Serrano) |
| Party3: | Constitutional and conservative independents |
| Leaders Seat3: | Madrid |
| Seats3: | 7 |
| Seat Change3: | 7 |
| Percentage3: | 1.83% |
| Swing3: | 1.75 |
| Map Size: | 300px |
| Prime Minister | |
| Posttitle: | Prime Minister after election |
| Before Election: | Estanislao Figueras |
| Before Party: | Federal Democratic Republican Party |
| After Election: | Francesc Pi i Margall |
| After Party: | Federal Democratic Republican Party |
General elections to the Cortes Generales were held in Spain on May 10, 1873. At stake were all 383 seats in the Congress of Deputies. The Federal Democratic Republican Party won the elections.
The elections were held with universal male suffrage. The 1873 were both the first and last of the brief 1st Spanish Republic. The elections, however, were held in very unorthodox conditions and drew a very low turnout, as neither the Carlist or alfonsist monarchists participated in the elections. The same happened with centralist and unitarian Republicans, or even the incipient labor organizations affiliated with the 1st International, that held a boycott campaign. Those were possibly the election with the lowest turnout in the history of Spain. In Catalonia only the 25% of the electorate voted. In Madrid the 28%. This left the republic with a serious lack of legitimacy.
| Party | Seats | Difference | Leader | ||
|---|---|---|---|---|---|
| align=center bgcolor=purple | 346 | 268 | Francesc Pi i Margall | ||
| align=center bgcolor=magenta | 20 | 254 | Cristino Martos y Balbí | ||
| align=center bgcolor=lightgreen | Constitutional Party and conservative independents | 7 | 7 | Práxedes Mateo Sagasta | |
| align=center bgcolor=blue | Independent monarchists | 3 | 6 | Antonio Cánovas del Castillo | |
| align=center bgcolor=purple | Independent republicans ("Unitarians") | 1 | 1 | ||
| align=center bgcolor=grey | Other | 6 | 5 | ||
| Total | 391 | ||||