| Official Name: | Didy |
| Pushpin Map: | Madagascar |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Madagascar |
| Pushpin Mapsize: | 180 |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Alaotra-Mangoro |
| Subdivision Type2: | District |
| Subdivision Name2: | Ambatondrazaka |
| Leader Title: | Mayor |
| Leader Name: | Davidson Radoka |
| Area Footnotes: | [1] |
| Area Total Km2: | 1773.16 |
| Population As Of: | 2018 |
| Population Footnotes: | [2] |
| Population Total: | 33,039 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Timezone: | EAT |
| Utc Offset: | 3 |
| Coordinates: | -18.1167°N 80°W |
| Elevation Footnotes: | [3] |
| Elevation M: | 1034 |
| Postal Code Type: | Postal code |
| Postal Code: | 503 |
Didy is a rural commune in Madagascar. It belongs to the district of Ambatondrazaka, which is a part of Alaotra-Mangoro Region. The population of the commune was estimated to be 33,039 in 2018.
The town of Didy is situated at 54 km from Ambatondrazaka.[4]
Only primary schooling is available. The majority 85% of the population of the commune are farmers, while an additional 14% receives their livelihood from raising livestock. The most important crop is rice, while other important products are maize, cassava and tomato. Services provide employment for 1% of the population.[5]
In the beginning of 2012, a sapphire and ruby rush occurred 25 kilometers south-east of Didy. The rush was due to the exceptional color, clarity and size of the precious stones found there.
Discovered in alluvium, in the core of a wild forest located in the Ankeniheny-Zahamena national park, sapphires and rubies required holes from 50 centimeters to 2 meters depth to be extracted.
Following the arrival of 40,000 people on the occurrence, the government evacuated the area in June 2012 and the access was denied.