Aleixo Corte-Real (born Nai-Sesu; Ainaro, 1886 — Timor, May 1943), better known simply as Dom Aleixo, was an East Timorese nobleman.
While still young, in 1911-1912, he fought with the Portuguese a column of insurgents, coming from Manufahi, commanded by the liurai Dom Boaventura.
Having later converted to Catholicism, he was baptized in 1931, then adopting the name by which he became known. Dom Aleixo was Soro's liurai.
In 1942, during World War II, the Japanese invaded the island of Timor where some Australian companies were stationed that offered resistance, counting on the support of some Timorese population.
The Black Columns, East Timorese militias armed by the Japanese, sowed terror among the civilian population until the end of the three-year occupation.
Dom Aleixo Corte-Real, who opposed the Japanese invasion since its inception, fought against Japanese troops and black columns, being captured in 1943.
Shortly thereafter he was shot with his entire family.
During the period after World War II he was a central figure in the colonial promotion of the Portuguese Estado Novo regime, and it is argued that Dom Aleixo was killed for having remained faithful to Portugal, refusing to surrender the Portuguese flag he had hidden.