The blaze broke out on Sunday evening and quickly spread through tents erected in the east of the city for the three-day gathering of thousands of eunuchs.
Police said a short circuit in an electrical system may have sparked the fire.
Eye-witnesses recounted the horror of watching their friends caught up in the inferno.
"We were serving tea to some activists from Haryana when the tent above our heads just exploded in flames," Swapna Kumari, one of the participants, told the Hindustan Times newspaper.
Fire brigade officials said they pulled 14 charred bodies from the gutted tents. One person died on the way to the hospital.
The Delhi government is investigating allegations that the organisers of the gathering had not sought permission from the fire department.
In India the term "eunuch" is mostly used to refer to cross-dressers and pre and post-operative transsexuals.
Indian eunuchs are severely marginalised and, unable to get jobs, often rely on begging and the sex trade for income.
COMMENTS (2)
Comments are moderated and generally will be posted if they are on-topic and not abusive.
For more information, please see our Comments FAQ
@ali: Not sure of the tone of your comment, but it came across as possibly mockery. I apologize if that wasn't your intent, but this is human life we're talking about.
Regardless of their handicap (and yes, it is no different than being physically handicapped), to quote John Donne, "any man's death diminishes me".
awww....poor they