In Jain Dharma, there isn’t a single universal “Kothari Kuldevi.” Kuldevi (family deity) practices are regional and family-specific, and they are more a local folk tradition than a formal doctrinal part of Jainism. Many Jains, including those with the surname Kothari, primarily follow the venerations of the Tirthankaras and the Jain scriptures, while some families or communities may honor a local kuldevi or kuldevta as part of their own ancestral customs. The exact deity and the rituals can vary by region (e.g., Gujarat, Rajasthan) and by lineage.

If you want a precise kuldevi name for your specific Kothari lineage, it would typically come from your family's own genealogical records or local community practices. I can help you look for authentic references in Jain literature or on JainKnowledge.com if you share more details about your region or gotra.