The Alcis were a pair of twin male gods worshipped by the Naharvali, a tribe of ancient Germanic peoples. They are mentioned in chapter 43 of the Germania of Tacitus. According to his account, their worship took place in a grove, with no visual representation of the deities, and their priests were said to wear women's clothing.
This article incorporates text from a publication now in the public domain: Smith, William, ed. (1870). "". Dictionary of Greek and Roman Biography and Mythology.