| Official Name: | Mâncio Lima |
| Pushpin Map: | Brazil |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Brazil |
| Subdivision Type: | Country |
| Subdivision Name: | Brazil |
| Subdivision Type1: | State |
| Subdivision Name1: | Acre |
| Leader Title: | Mayor |
| Leader Name: | Isaac Lima (PT) |
| Unit Pref: | Imperial |
| Area Total Km2: | 4672 |
| Population As Of: | 2020 est[1] |
| Population Total: | 19,311 |
| Population Blank1 Title: | Ethnicities |
| Timezone: | ACT |
| Utc Offset: | -5 |
| Coordinates: | -7.6139°N -72.8958°W |
Mâncio Lima (pronounced as /pt/) is the westernmost municipality of Brazil and it is located in the state of Acre. It is also the northernmost city of that state. Its population is 19,311 and its area is 4,672 km2. Its counterparts in the North, South and East are respectively Uiramutã, state of Roraima; Chuí, Rio Grande do Sul; and João Pessoa, the state capital of Paraíba.
The municipality contains 32% of the Serra do Divisor National Park, created in 1989.