The Ontario Teachers' Federation (OTF) is a professional organization representing teachers in the province of Ontario, Canada. Established in 1944, it advocates for the interests of its members, promotes quality education, and supports professional development for educators. OTF works collaboratively with various stakeholders, including the Ministry of Education and school boards, to enhance the teaching profession. OTF consists of four affiliate organizations, each representing different groups of teachers, including those in public, Catholic, and French-language schools. The federation also provides resources, training, and support to help teachers improve their skills and address challenges in the classroom.