| Official Name: | Santo Amaro do Maranhão |
| Settlement Type: | Municipality |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Brazil |
| Subdivision Type: | Country |
| Subdivision Name: |  Brazil |
| Subdivision Name1: | Nordeste |
| Subdivision Type2: | State |
| Subdivision Name2: | Maranhão |
| Subdivision Type3: | Mesoregion |
| Subdivision Name3: | Norte Maranhense |
| Unit Pref: | Imperial |
| Population As Of: | 2020 [1] |
| Population Total: | 16,034 |
| Timezone: | BRT |
| Utc Offset: | -3 |
Santo Amaro do Maranhão is a municipality in the state of Maranhão in the Northeast region of Brazil.[2] [3] [4] [5]
The municipality contains part of the Upaon-Açu/Miritiba/Alto Preguiças Environmental Protection Area, created in 1992.
The city os Santo Amaro do Maranhão is one of the 3 that are part of Lençóis Maranhenses National Park, an uncommon landscape which mixes dunes and cristal clear lakes.