| Official Name: | Tartarugalzinho |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Type2: | State |
| Subdivision Name: |  Brazil |
| Subdivision Name1: | North |
| Subdivision Name2: | Amapá |
| Leader Title: | Mayor |
| Leader Name: | Rildo Oliveira |
| Leader Party: | PMDB |
| Established Date: | 17 December 1987 |
| Area Total Km2: | 6,712 |
| Population As Of: | 2020 |
| Population Total: | 17,769 |
| Timezone: | BRT |
| Utc Offset: | -3 |
| Coordinates: | 1.5058°N -50.9119°W |
Tartarugalzinho (pronounced as /pt/) is a municipality located in the east of the state of Amapá in Brazil. Its population is 17,769[1] and its area is 6712km2. Tartarugalzinho is located 230km (140miles) from the state capitol of Macapá. It was established as a municipality on 17 December 1987.
The first settlement in the municipality was located on the Tartarugal Grande River, however the rapids made transport difficult, and the town was moved to a tributary. That town has become known as Tartarugalzinho.
The economy is based on raising livestock, primarily cattle and buffalo, subsistence farming and fishing. The discovery of gold in the area has caused a population surge. A major industry in the municipality is the Champion factory which turns eucalyptus seeds into pulp for the paper industry.[2]
Bom Jesus dos Fernandes, an agricultural village, is located within the municipality.[3]
The municipality contains part of the Lago Piratuba Biological Reserve, a fully protected conservation unit created in 1980.It also contains 7.64% of the Amapá State Forest, a sustainable use conservation unit established in 2006.