Luís Manuel Júlio Frederico Gonçalves (born Nova Goa 1846, died 1896), who usually wrote simply as J. Gonçalves, was a Goan writer. Referred to by his contemporaries as the Alexandre Herculano of Goa, Gonçalves had a foundational role in developing Portuguese-language writing in the Portuguese colony of Goa. A lawyer by training, Gonçalves served in public administration, most significantly as librarian of Panjim's public library.