Udiyanoor Devi temple is located at Maruthamkuzhi on Sasthamangalam – Vattiyoorkavu road in Thiruvananthapuram. Some people believe the murti worshipped in the temple is Goddess Bhadrakali. Another set of belief is that the deity in the temple is Goddess Durga. The annual festival in the temple is held in Meena Masam (March - April).
Darshanam of Udiyanoor Devi is towards north. The murti worshipped in the temple is Chaturbahu – four-armed. The deity holds shankh (conch), chakra (discus), Nandakam, Khadgam (sword) and Shoolam (trident).
Apart from the main murti there are three other peedams in the sanctum sanctorum. These peedams have murtis of Indrani, Vaishnavi and Varahi (these goddesses are part of Saptamatrikas). Puja is offered three times in the temple.
The Upa Devatas worshipped in the temple are Ganapathy, Yogeeswaran, Sastha and Madan Thampuran.
As per history, the murti worshipped in the temple was retrieved from a river by Neelkanth Gurupadar of Vattiyoorkonam Nair Veedu. In the beginning the temple used to perform animal sacrifice and then there were no Brahmin priests.
The main offering in the temple is an Ada Naivedyam made out of banana, coconut and rice batter.
The festival in the temple is known as Ooruttu utsavam and is held once in three years. The 8-day festival is held in the months of Meenam – Medam.
The annual pongala festival is held in Malayalam Meda Masam.