All foreign nationals traveling to India are required to possess a valid passport of their country and a valid Indian Visa issued by the Indian Embassy/Indian Consular office in their country. Please apply for a "Conference Visa". Invited speakers and selected applicants will be provided with the letters of invitation and relevant documents which must be submitted with the Visa Application form. If you don’t receive these documents from us before the end of September, please write to email@example.com indicating your passport number. Please apply for the Indian visa at least 2 months prior to your date of travel. Please note that if you apply for a tourist/business visa, and state that the purpose of your visit is to attend a conference, your application may be rejected.
Accompanying persons (NOT registered for the conference) can travel on a tourist visa. This is easy and quick. You apply online for a tourist visa at https://indianvisaonline.gov.in/visa/tvoa.html