Mathias Roman Salas is a Bougainvillean politician and former Cabinet minister.
On 23 June 2005 he was appointed Minister of Finance and Minerals, Gas and Petroleum Exploration in the cabinet of President Joseph Kabui.
[4] On 2 October 2020 he was appointed Minister of Finance and Treasury in the cabinet of Ishmael Toroama.
[5] Salas delivered three annual budgets for the Autonomous Bougainville Government, focusing on regional development.
[6] In September 2023, Salas was removed from this post in a Cabinet reshuffle, and replaced by Robin Wilson, the member from Terra constituency.