Diego Martin is a Borough of Trinidad and Tobago.

Urban areas within the region include Carenage, Diego Martin, Maraval and parts of Saint James.

On Thursday 19 November 2020, while addressing the public on the re-opening of the Diego Martin South Community Centre, Prime Minister and MP for Diego Martin West Dr Keith Rowley announced that Diego Martin, along with Siparia, would be elevated to borough status in 2021.

Both Diego Martin and Siparia were declared boroughs in 2023.

6 or 2023 was assented to and enacted by Parliament on June 09, 2023 and same was proclaimed into operation by Her Excellency Christine Carla Kangaloo, President of the Republic of Trinidad and Tobago, on June 20, 2023. https://newsday.co.tt/2020/11/24/mp-corporation-chair-optimistic-about-diego-martin-borough-status/