Diogo Velez Mouta Pacheco de Amorim (born 10 March 1949) is a Portuguese politician of the Chega and since 2022 a member of the Assembly of the Republic representing Porto.

During his time as a student, he was active in the Independent Movement for the National Reconstruction / Party of the Portuguese Right and organizations that contested decolonization.

[2] In 2019, Pacheco de Amorim left CDS – People's Party of which he had been a longstanding member and joined Chega.

Between 9 September and 8 October 2021 he was appointed as deputy to the Assembly of the Republic, replacing Chega leader André Ventura who temporarily resigned to oversee the municipal elections that year.

[4] During the 2022 Portuguese legislative election, Pacheco de Amorim was returned to the Assembly as a deputy for the Porto constituency.