Harlots in Religion

Harlots within Judaism

Harlots were accepted within Judaism, though it was shameful to be in the profession. Priests were not allowed to marry harlots, or even have a daughter in the profession; the punishment for this was being killed with fire (though this only applied to the married or betrothed).
Although they had harlots on their streets, there were sacred harlots that had luxuries from the law given to them, such as statues and provisions. These harlots were condemned as they had a connection with idolatry.
Notable harlots: Tamar and Rahab

Info Link:
http://www.jewishvirtuallibrary.org/jsource/judaica/ejud_0002_0016_0_16127.html 

Harlots within Buddhism

There was sacred prostitution within Buddhism which doesn't happen anymore. The males would have a consort they would have to spiritually transform with and if this did not happen it would be a sinful connection. Many people visit the western slope of Mount Lawu to worship the fertility, nature spirits, or ancestors here.

Info Link:
http://en.wikipedia.org/wiki/Sacred_prostitution#Buddhism

There are other a lot of other religions that could be researched into, but I did try and find some within Sikhism and Hinduism, yet found nothing on any famous harlots or sacred prostitution.