Igor Thiago Nascimento Rodrigues (ইগর থিয়াগো), known simply as Igor Thiago, is a Brazilian professional footballer who plays as a striker for Premier League club Brentford.

Born in Gama, administrative region of Brasília, Thiago was 13 years old when he lost his father, and supported his street-cleaner mother María Diva by working in construction as a bricklayer, odd-jobbing at fairs, and by handing out flyers.

He did not consider a career in football, but began playing at Gremio Ocidental, where his brother was already a player. He started playing futsal and had trials at several teams before joining the under-17 team of Verê, from the interior of Paraná, when he was sixteen. He later joined Cruzeiro's academy in 2019.

Born in Brazil, Thiago received a Bulgarian passport in 2023, which made him available to play for Bulgaria, subject to a five-year residency requirement, in addition to the Brazil national team. In January 2024 he received a call-up for Brazil U23, but declined it reportedly to keep his international options open, despite the fact he said it would be a dream to represent Brazil on international level.