This article compares the attitudes of teachers located in Spain and the United Kingdom toward the integration of LGBTIQ+ issues in their teaching, reflects on teacher training and proposes recommendations to improve teacher education. Drawing on data gathered from 447 teachers located in both countries, the study reveals that the participants agree that their lessons would benefit from integrating LGBTIQ+ topics. However, the results show that pre-service teachers are more favorable than in-service teachers, and teachers in Spain are more positive than their counterparts in the United Kingdom. The article seeks to encourage the development of specific LGBTIQ+ -related teacher training.