Since the term Emotional Intelligence (EI) was coined, several authors have developed different theories accompanied by questionnaires to measure the construct. The objective of this systematic review was to analyze the EI evaluation instruments in the field of Primary Education (age range 6-12 years) used in scientific research published in indexed journals. A systematic review was carried out following the PRISMA guidelines. The search strategy was carried out in five databases: Dialnet, Psycinfo, Scopus, PyscNET and ERIC by ProQuest. A total of 62 articles with 27 different questionnaires were found that evaluate EI in a population with ages ranging from 6 to 12 years. The main theoretical models of EI on which the questionnaires were based on are: the Bar-On model of emotional-social intelligence and the Salovey & Mayers model. The most widely used questionnaires were: The Bar-On Emotional Quotient Inventory (EQ-i: YV) and Trait Emotional Intelligence Questionnaire Child Form (TEIQue CF). This systematic review collects for the first time the questionnaires used specifically to evaluate children's EI and synthesizes them based on the different theoretical models, contributing to the knowledge of the tools available for use in the educational field.