The 3 Margens – Festival Latino-Americano de Cinema is an annual film festival held in Foz do Iguaçu, Paraná, Brazil, extending its activities to Puerto Iguazú, Argentina, and Ciudad del Este, Paraguay, within the Trinational Frontier region. Established to promote Latin American and Caribbean cinema, the festival fosters the diffusion, creation, and exchange of experiences among filmmakers. It features competitive showcases for short films, including "Afluentes" for Latin American and Caribbean productions and "Entre Rios" for regional works, alongside screenings of invited feature films. Beyond exhibitions, 3 Margens offers comprehensive audiovisual training through workshops, seminars, debates, a Screenwriting Lab, and professional courses.