Nileshwar Koyithatta Tharvadu Kavu temple is located at Koyithatta near Nileshwar in Kasaragod district, Kerala. The shrine is dedicated to various Goddesses and other deities that are seen in various kavus, sacred places and tharavadu in Kasaragod region of Kerala. The deities are worshipped in small sreekovil, under trees and on square platforms. The annual theyyam kaliyattam thira festival in the temple is held for two days in Malayalam Meda Masam (May 1 and May 2 – Medam 18 and Medam 19).
The important theyyams that are part of the annual theyyam kaliyattam
festival are - അന്തിയണങ്ങും
ഭൂതം, കാര്ന്നോന്, ചെറിയ ഭഗവതി, ചാമുണ്ഡി, ദണ്ഡ്യങ്ങാനത്ത് ഭഗവതി, വിഷ്ണുമൂര്ത്തി, ധര്മദൈവമായ പാര്കുളങ്ങര ഭഗവതി, ഗുളികന് - Anthiyanagum
Bhootham, Karnoor theyyam, Cheriya Bhagavathi theyyam, Dhandyanganathu
Bhagavathi, Vishnumoorthi, Padarkulangara theyyam, Gulikana and Chamundi
theyyam.