| Medianeira | |
| Official Name: | Municipality of Medianeira |
| Settlement Type: | Municipality |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Type2: | State |
| Subdivision Name: |  Brazil |
| Subdivision Name1: | South |
| Leader Title: | Mayor |
| Leader Name: | Antônio França |
| Established Title: | Founded |
| Established Date: | 10 October 1952 |
| Area Total Km2: | 328.733 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 46,574 |
| Population Density Km2: | 127.25 |
| Timezone: | UTC-3 |
| Utc Offset: | -3 |
| Coordinates: | -25.295°N -54.0939°W |
| Elevation M: | 402 |
| Blank Name: | HDI (2010) |
| Blank Info: | 0.763 – high[2] |
Medianeira is a municipality in the state of Paraná in Brazil. In 2020 it had 46,574 inhabitants. The agriculture-industrial sector is the base of the city's economy.