The three-day World Hindu Conference ended in Gorakhpur on Sunday with a call to "defend Hindu culture" worldwide, including in Nepal.
Addressing a large rally in Gorakhpur, World Hindu Federation chief Bharat Kesar Singh alleged "large-scale conversion" was being carried out in Nepal under the present Maoist-supported regime.
"Cows are being slaughtered on a large scale and Hindus are facing threats from several quarters. Sanskrit is no more being taught in Nepali schools and the government of Nepal has stopped financing Sanskrit institutions," Singh, the ADC to the Nepalese King, said.
He alleged there had been "consistent attacks on Hindu culture and institutions, including temples, in different parts of the world."
"The freedom to practice Hinduism is being snatched away in many countries, including Nepal," he alleged.
The three-day conference discussed various matters, including untouchability, conversion, cow slaughter and Ram Mandir construction in Ayodhya.
It saw the participation of more than 10,000 representatives from 39 countries.
Speakers included Goravardhan Peeth Shankaracharya Swami Nischalanand, Swami Chinmayanand, Acharya Dharmendra, Mahant Avaidyanath, and Gorakhpur MP Yogi Adityanath.