Peter Tuesday Hughes (1940?-2005?) was an American science fiction and mystery author. He was an early exponent of the "gay gothic" subgenre. Though published primarily by Greenleaf Classics, a firm known for insisting that its authors include graphic sex in their works, his novels "[depict] gay relationships with a depth surprising for the markets he published for." However, some of his contemporaries objected to the pessimism Hughes occasionally expressed.