Sidhe are Irish earthen mounds, which in Irish folklore and mythology are believed to be the home of the (the people of the mounds).
Sidhe may also refer to:
Irish mythology Bean sídhe or banshee, a female spirit in Irish mythology Leanan sídhe, a beautiful fairy woman in Irish mythology who takes a human lover Cat Sidhe or Cat sìth, a fairy creature from Scottish and Irish mythology
Other uses Sidhe (game developer), a New Zealand software developer a fictional race in the Heretic series of games Doc Sidhe and Sidhe-Devil, a pair of urban fantasy novels by Aaron Allston