| Official Name: | Nyumashiwa |
| Pushpin Map: | Comoros |
| Pushpin Map Caption: | Location of Nyumashiwa on the island of Moheli |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Type1: | Island |
| Subdivision Name1: | Moheli |
| Leader Title: | Mayor |
| Leader Title1: | Local councillor, legal advisor in charge of the local police. |
| Population As Of: | 2010 |
| Population Density Km2: | auto |
| Timezone: | Eastern Africa Time |
| Utc Offset: | +3 |
| Area Code: | 269 |
Nyumashiwa (population 3,400) is the second largest city on the Comorian island of Mohéli, after Fomboni, the capital. It is located in the southern part of the island; it is known because of the islets which are in front of the city and which are called the islets of Nyumashiwa. There are eight of them. Some of them have the most beautiful white sand beaches on the island.
The islets of Nyumashiwa that are located off the southern coast of Mohéli are the largest and best known. Their names all begin with shisiwa which means island . They all have the same massive appearance.