| Tornquist | |
| Native Name: | Partido de Tornquist |
| Settlement Type: | Department |
| Image Blank Emblem: | Municipio tornquist logo.png |
| Blank Emblem Size: | 200 |
| Coordinates: | -38.1°N -75°W |
| Subdivision Type: | Country |
| Subdivision Name: | Argentina |
| Established Title: | Established |
| Established Date: | 1910 |
| Founder: | Ernesto Tornquist |
| Seat Type: | Seat |
| Seat: | Tornquist |
| Leader Party: | UCR |
| Leader Title: | Mayor |
| Leader Name: | Sergio Fabián Bordoni |
| Unit Pref: | Metric |
| Area Total Km2: | 4184 |
| Population Total: | 11759 |
| Population Density Km2: | auto |
| Population Demonym: | tornquistense |
| Postal Code Type: | Postal Code |
| Postal Code: | B8160 |
| Postal2 Code Type: | IFAM |
| Postal2 Code: | BUE125 |
| Area Code Type: | Area Code |
| Area Code: | 0291 |
Tornquist Partido is a partido in the southwest of Buenos Aires Province in Argentina and is named after Ernesto Tornquist, founder of Tornquist, the partido's main city.
The provincial subdivision has a population of about 12,000 inhabitants in an area of 4184sqkm, and its capital city is Tornquist, which is 634km (394miles) from Buenos Aires.
The economy of Tornquist is dominated by farming, the main agricultural products are: wheat, barley, oats, maize, sunflower, soybeans and sorghum.
There is also large scale production of beef and dairy products, and smaller scale production of pork, chicken, sheep and honey.