You need a visa for Saint Helena, Ascension and Tristan da Cunha if you have an Indian passport

To visit Saint Helena for Business or Tourism, you require a visa. An eVisa is the fastest and easiest way of obtaining a Saint Helena visa as you can submit an application and supporting documents online. If approved, you'll receive your eVisa confirmation electronically. When you arrive in Saint Helena, border crossing will ask for your passport and eVisa to ensure you have the proper visas. For all other visas, visit the government site.