Inclusive education is currently one of the main aspirations of the Spanish educational system and one of the key aspects for its achievement is teachers' attitudes toward educational inclusion. In recent years, many studies worldwide have analyzed this aspect, but so far, any systematic review has specifically focused on the Spanish educational framework. For this reason, the purpose of this paper is to review the studies published from 2010 to 2019 whose aim was to analyze teachers' attitudes towards educational inclusion in Spain. After a literature search in four different databases (PsycInfo, ERIC, Dialnet Plus, and Google Scholar), 34 studies were selected and reviewed. The results suggest that Spanish teachers' attitudes toward educational inclusion are generally positive, although in some cases they are ambiguous. Teachers' attitudes are mainly influenced by the amount of training and their contact or not with students with special educational needs. The discussion highlights that more studies with a greater methodological diversity are required in order to provide a complete analysis of teachers' attitudes toward inclusion and that teacher training is one of the best tools to generate positive attitudes.