Kalar Bhootham Theyyam (കാളർഭൂതം) is a rare theyyam associated with ghosts and supernatural beings worshiped in few kavu tharavadu and temples during the annual kaliyattam thira festival in Kannur and Kasaragod districts of Kerala. As per information, Kalar Bhootham theyyam is that of a person who met with an unnatural death and is roaming around on earth. Kalar Bhootham theyyam is that of the supernatural being causing havoc in a region by disturbing the peaceful life of people by harming them and their farm animals. To appease and for peaceful coexistence the bhootham is given an aaroodam or worship place. A theyyam is performed annually to keep her calm and content.
Kalar Bhootham theyyam is offered prayers to achieve peace and prosperity. The being is worshiped for good health of children and also for desire fulfillment. Some tantrics propitiate Kalar Bhootham to defeat enemies.
Kalar Bhootham theyyam is performed usually at night.
It is widely believed that people who met with a violent death roams around in the form of Bhootham and some of them are worshipped in theyyam rituals.