The objective of this comparative study is to evaluate the extent to which the 17 autonomous parliaments in Spain demonstrate gender sensitivity. The research employs an index designed to assess the extent to which these legislative bodies promote gender equality. The descriptive representation of each chamber is examined, with particular attention paid to the gender composition of members, including the percentage of women and men. Furthermore, an analysis of the political landscape is conducted, examining which parliamentary groups hold the majority and assessing the presence of gender-focused initiatives. This includes an investigation of whether a Gender Equality Committee exists, or whether gender equality issues are integrated within other committees. Additionally, the investigation considers the existence of gender equality plans, their scope, and the extent to which they are applied, whether to staff, parliamentarians, or both. Moreover, the study assesses the legislative output of Equality Committees, including the number and scope of legislative initiatives they handle. Additionally, it investigates the existence of protocols against sexual abuse and harassment, which are crucial elements in fostering a gender-sensitive environment. The findings will provide valuable insights into how gender equality is embedded in the functioning of Spain's regional parliaments, shedding light on areas for improvement and best practices that can be adopted across the country.