| Arroio do Meio | |
| Settlement Type: | Municipality |
| Pushpin Map: | Brazil |
| Pushpin Map Caption: | Location in Brazil |
| Coordinates: | -29.4008°N -51.945°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Brazil |
| Subdivision Type1: | State |
| Subdivision Name1: | Rio Grande do Sul |
| Subdivision Type2: | Mesoregion |
| Subdivision Name2: | Centro Oriental Rio-grandense |
| Subdivision Type3: | Microregion |
| Subdivision Name3: | Lajeado-Estrela |
| Established Title: | Settled |
| Established Date: | 1853 |
| Established Title1: | Founded |
| Established Date1: | November 28, 1934 |
| Leader Party: | Progressistas |
| Leader Title: | Mayor |
| Leader Name: | Danilo Bruxel |
| Total Type: | Total |
| Area Total Km2: | 157.955 |
| Elevation M: | 54 |
| Population Total: | 20,967 |
| Population As Of: | 2020 [1] |
| Population Density Km2: | auto |
| Timezone: | BRT |
| Utc Offset: | -3 |
| Postal Code Type: | Postal code |
| Area Code Type: | Area/distance code |
| Area Code: | 95940-000 |
| Blank Name Sec1: | HDI |
| Blank Info Sec1: | 0.769 |
| Blank1 Name Sec1: | GDP |
| Blank1 Info Sec1: | R$ 405,662,000 |
| Blank2 Name Sec1: | GDP per capita |
| Blank2 Info Sec1: | R$59.080,01 |
Arroio do Meio is a municipality in the state of Rio Grande do Sul, Brazil. It is 98 km from Porto Alegre. It is on the banks of the Taquari River.
The territory was little populated before the arrival of Europeans. Settlement in the territory began in 1853, principally by Germans and Portuguese. The territory used to be part of Lajeado and Encantado municipalities.