This article presents a descriptive and analytical overview of potential ellipsis cases in Spanish. After highlighting the main complications that the notion of ellipsis brings up, this work presents a detailed summary of the main empirical properties of ellipsis in nominal, verbal and clausal contexts. Then, the main theories about ellipsis and the analytical alternatives to standard deletion at PF are presented. The article concludes with a discussion of what type of properties ellipsis may have in Spanish.