Oyoor Keezhoottu Devi temple is located at Oyoor in Pathanamthitta district, Kerala. The temple is dedicated to Goddess Bhagavathi. The annual festival in the temple is held on Makayiram nakshatra day in Meena Masam (March - April).
This is traditional temple with a chathura sreekovil of Bhagavathi. The shrine has upa devatha temples, nalambalam, namaskara mandapam and kodimaram. The old structures have been replaced with new structures after renovation.
The annual festival, which begins with kodiyettam, is noted for Tantric pujas and rituals. Procession, ezhunnallathu, huge effigies of characters from Hindu puranas and epics and melam are part of the festival. The festival concludes with arattu procession.
Pongala ritual is observed in the temple.
The shrine observes Vishu, Navratri, Ashtami, Navami, Vidyarambham and Vrischikam Chirappu mahotsavam and Thrikarthika festival.