Thiaguinho or Tiaguinho is a Portuguese name derived from Tiago or Thiago, meaning little Tiago or Tiago junior, and may refer to:
Thiaguinho (singer) (born 1983), born Thiago André Barbosa, Brazilian singer
Footballers Thiaguinho (footballer, born 1984), Thiago Rocha da Cunha, Brazilian defensive midfielder Thiaguinho (footballer, born 1985), Thiago Silva de Paiva, Brazilian attacking midfielder Thiaguinho (footballer, born 1987), Thiago Benevides Gonçalves, Brazilian winger Thiaguinho (footballer, born 1990), Thiago dos Santos Menezes, Brazilian forward Thiaguinho (footballer, born 1997), Thiago Beserra dos Santos, Brazilian midfielder Thiaguinho (footballer, born 1998), Wytalo Thiago de Assis Lima, Brazilian striker Thiaguinho (footballer, born 2000), Thiago de Oliveira Silva, Brazilian attacking midfielder Tiaguinho (footballer, born 1994) (1994–2016), Tiago da Rocha Vieira, Brazilian forward Tiaguinho (footballer, born 2008), Tiago Augusto Gonçalves, Brazilian midfielder Tiaguinho (futsal player) (born 1998), Tiago André Santos Fernandes, Portuguese futsal player