"Eco" is a song co-written and recorded by Italian singer-songwriter Joan Thiele, released by Numero Uno and Sony Music on 12 February 2025 as the second single from her second studio album Joanita. It competed during the Sanremo Music Festival 2025, placing 20th.
A music video of "Eco", directed by Roberto Ortu, was released on 12 February 2025 via Thiele's YouTube channel.