| Tomás de Melo | |
| Monarch1: | Maria I |
| Predecessor1: | José César de Meneses |
| Successor1: | 2nd Government junta |
| Birth Date: | 1742 9, df=y |
| Birth Place: | Mercês, Lisbon, Portugal |
| Death Date: | ? |
| Death Place: | ? |
| Signature: | Assinatura de D. Tomás José de Melo.jpg |
| Signature Size: | 150px |
| Office: | Governor of Pernambuco |
| Rank: | Chefe de esquadra |
| Battles: | |
| Branch: | Portuguese Navy |
| Allegiance: | Portugal |
| Serviceyears: | 1755–1??? |
| Term Start: | 11 December 1787 |
| Term End: | 29 December 1798 |
| Children: | D. Mariana Joaquina Rosa do Carmo D. António José de Melo |
| Honorific Prefix: | His Lordship |
D. Tomás José de Melo (20 September 1742 – ?) was a Portuguese nobleman, naval officer and colonial administrator, Governor of Pernambuco from 1787 to 1798. A descendant of the Marquises of Alegrete, D. Tomás de Melo reached the rank of graduated chefe de esquadra (counter admiral) in the Portuguese Navy, participating in the Bombardment of Algiers in 1784.
D. Tomás José de Melo was born in the freguesia of Mercês, Lisbon, on 20 September 1742 to D. António José de Melo and his wife D. Mariana Joaquina de Mendonça, and baptized four days later, on 24 September 1742. He was a descendant of the Marquises of Alegrete, in other words, of the first nobility of the court.
He began his military career enlisting as soldado at age 14, in 1755. In 1761, he passed to the post of guarda-marinha, being the first of his class. In the same year, he was nominated capitão-tenente, function who exerted for twenty years, seven of them in India. In 1780, he was promoted to capitão de mar e guerra and participated in the attack on Algiers, captaining the frigate Golfinho. In 1784, he was elevated to the function of coronel do mar.
On 11 August 1786, he was nominated governor and captain general of Pernambuco, of which he took office on 11 December 1787. Ten years later, received his last mercy: he was graced by the regent D. João, with the post of graduated chefe de esquadra. His trajectory in the captaincy was long, just like its predecessor: he was responsible for the administration of the captaincy from 11 December 1787 until 29 December 1798, when he was removed from the government.
D. Tomás de Melo needed to deal with the growth of cotton cultivation, which dismantled the supply of staple foods in the captaincy, and faced a period of three years of severe drought, reducing the production of flour. After the drought, the cultivation of cotton to the profitable external market also did not contributed to the production of food to the population: it was better and easier to sell cotton to Europe than cultivate flour. Thus, the production of cotton duplicated in six years: 9,000 sacks exported in 1792 and 18,000 in 1798. The governor also had to deal with the constant incursions of French ships on the northeastern coast, which reinstalled forced recruitment.
In 1798, his government was denounced two times to the Overseas Council. One of the denounces was made by António de Deus da Paz, a solicitor and accountant, and the other was made by Jerónimo José Gomes, a judge. The governor was accused of nepotism, smuggling, fraud, and selling military ranks. He was dismissed by royal charter of 20 August 1798, and on 29 December 1798, he handed over the government to a junta, composed by the Bishop of Olinda, D. José Joaquim da Cunha de Azeredo Coutinho, chefe de esquadra Pedro Severim, Intendant of the Navy, and desembargador António Luís Pereira da Cunha, ouvidor-geral of the comarca. He was arrested together with his servant, Domingos José Fidélis, and they were sent to Bahia. He was eventually released from prison, acquitted, and returned to Portugal, while Domingos José Fidélis was sent to Lisbon.
He did not get married, however he had two children in Pernambuco, when he was governor: D. Mariana Joaquina Rosa do Carmo and D. António José de Melo.