YIG or Yig may refer to:
Organizations Your Independent Grocer, a Canadian Grocery store YMCA Youth in Government, alternative name for YMCA Youth and Government Science and technology Yttrium iron garnet, a synthetic garnet YIG sphere, an yttrium-iron-garnet-based microwave-frequency filter Various media Yig (the Father of Serpents), a deity in H.P. Lovecraft's Cthulhu mythos The Curse of Yig, short story by H.P.Lovecraft and Zealia Bishop The Curse of Yig (book), collection of stories by Zealia Bishop