| Byalalu | |
| Settlement Type: | village |
| Pushpin Map: | India Karnataka#India |
| Pushpin Map Caption: | Location in Karnataka, India |
| Coordinates: | 12.8934°N 77.3745°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Karnataka |
| Subdivision Type2: | District |
| Subdivision Name2: | Bangalore south District |
| Government Type: | Panchayati raj (India) |
| Governing Body: | Gram panchayat |
| Unit Pref: | Metric |
| Population Total: | 2300 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Kannada |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code: | 562130 |
| Registration Plate: | KA |
| Iso Code: | IN-KA |
Byalalu is a village in Bangalore south District in Karnataka, India. It is an hour's drive from Bangalore city, off the Bangalore-Mysore highway. The population was reported as 2,300 in the 2011 Indian census.
The Indian Space Research Organisation (ISRO) set up a Deep Space Network (DSN) centre in Byalalu. One of the main advantages of having the DSN at Byalalu was its saucer-like shape that would help in blocking radio frequency disturbances. The DSN was initially set up to track Chandrayaan I, India's first lunar mission; as of September 2014, it is being used to track the ongoing Mars Orbiter Mission (MOM), known as Mangalyaan.[1] [2] [3]