| Vellayani | |
| Settlement Type: | village |
| Pushpin Map: | India Kerala#India |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Kerala, India |
| Coordinates: | 8.4456°N 76.9925°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Kerala |
| Subdivision Type2: | District |
| Subdivision Name2: | Thiruvananthapuram |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Malayalam, English |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Area Code Type: | Telephone code |
| Area Code: | 0471 |
| Registration Plate: | KL-01, KL- |
| Blank1 Name Sec1: | Coastline |
| Blank1 Info Sec1: | 0km (00miles) |
| Blank2 Name Sec1: | Nearest city |
| Blank2 Info Sec1: | Thiruvananthapuram |
| Blank1 Name Sec2: | Climate |
| Blank1 Info Sec2: | Tropical monsoon (Köppen) |
| Blank2 Name Sec2: | Avg. summer temperature |
| Blank2 Info Sec2: | 35°C |
| Blank3 Name Sec2: | Avg. winter temperature |
| Blank3 Info Sec2: | 20°C |
Vellayani is a suburb of Thiruvananthapuram, the capital city of Kerala, India.
Vellayani is reached via Thiruvananthapuram Central Bus Station at Thampanoor (9 km) and from City Bus Depot at East Fort. It is connected by state road transport and private buses. The nearest airport is Thiruvananthapuram International Airport.
Vellayani is on the banks of Vellayani Lake, the only fresh water lake in Thiruvananthapuram district. Illegal sand mining, pollution and land reclamation are taking its toll on the lake.
A 700-year-old temple, dedicated to Goddess Kali is an attraction at Vellayani, Vellayani Devi Temple. The temple celebrates the longest (50 days) non-pilgrimage festival of South India. This festival is held once in three years and is known as the ‘Kaliyoottu Mahotsavam’ – which means ‘the festival of feeding the Devi’.
College of Agriculture, Vellayani, the first agricultural college of Kerala is situated here.[1]