Thiago is of Portuguese origin, derived from the word 'tiago', which means 'supplanter'. It gained popularity after being used by Brazilian footballer Thiago Silva, who played for AC Milan and Paris Saint-Germain, among other teams. The name has since become associated with football in Brazil and beyond. In Spanish-speaking countries, it is often spelled Thiago but pronounced as Diego due to the similarity between the two names.
"Thiago saw a notable increase in popularity from 6 births in 2019 to 11 in 2022, followed by a dip to 5 in 2023, totaling 22 births over the three years."