Hernâni Filomena Maria Coelho da Silva (born 27 August 1964), also known by his nom de guerre Natan, is an East Timorese politician and diplomat, and a member of the Fretilin political party.

When the Indonesians conquered that city on 9 December of the same year, Coelho's family fled to Cabalaki [de], the mountain where the Fretilin base was located.

From 1980 to 1982, Coelho worked as a messenger for the East Timorese resistance, and in 1983, he joined the Catholic Youth Organisation of Timor-Leste (OJECTIL).

Between 1986 and 1989, he continued his studies at the Faculty of Animal Husbandry (Fapet) of Jenderal Soedirman University in Purwokerto, Central Java, where he was also an assistant lecturer in 1988–1989.

[1] Following the Santa Cruz massacre in Dili in November 1991 and the collapse of most of the resistance movement in Indonesia and East Timor, Coelho became the Coordinator of the Special Bureau of the newly formed Timorese Socialist Association.

[1] From November 1995 to July 1999, Coelho was employed by the Macau government as Senior Program Officer in the Department of Environmental and Public Sanitation.

[1] Coelho was then hired by the United Nations Transitional Administration in East Timor (UNTAET) and stayed there from May to November 2001.

[8][9] Upon the formation of the VII Constitutional Government on 15 September 2017, he relinquished that office to Aurélio Sérgio Cristóvão Guterres,[10] but on 3 October 2017, he was sworn in as the new Minister of Petroleum.

He is fluent in Tetum, Portuguese, English and Bahasa Indonesia, and also speaks Cantonese, Javanese and Thai at a basic conversational level.