by the President of the Portuguese Republic in 1920. •
Ernest Alexander (1870–1934), British army officer. Awarded grand officer. •
Amélie of Orléans (1865–1951), last Queen of Portugal. Presented by her son in mid-1909, for her heroism during assassination of her husband the King in 1908. •
Albert du Roy de Blicquy (1869–1940), Belgian general. •
David Legge Brainard (1856–1946), US Arctic explorer and US Army officer. •
John Brind (1878–1954), British army officer. Awarded by 1929. •
Ernesto Burzagli (1873–1944), Italian admiral. Awarded grand officer in 1920. •
Richard E. Byrd (1888–1957), US polar explorer and aviator. •
Humberto de Alencar Castelo Branco (1897–1967), military officer and president of Brazil. Awarded grand officer in 1945. •
Charles III of the United Kingdom (then Charles, Prince of Wales) (b. 1948). Awarded grand cross, awarded 1993. •
Victor Hugo de Azevedo Coutinho (1871–1955), naval officer and prime minister of Portugal. •
Francisco Craveiro Lopes (1894–1964), air force officer and president of Portugal. Awarded officer, grand officer, and grand cross. •
António Ramalho Eanes (b. 1935), Portuguese general. Awarded first grand collar, 2025. •
Guillaume, Grand Duke of Luxembourg (then hereditary grand duke) (b. 1981). Awarded grand cross, 2017. •
Hesketh Hesketh-Prichard (1876–1922), British army officer. Awarded Commander of the Military Order. •
Roberto Ivens (1850–1898), Portuguese explorer. Awarded 1895. •
Richard H. Jackson (1866–1971), US Navy admiral. Awarded grand officer. •
James L. Jones (b. 1943), US Marine Corps general. Awarded grand cross, 2006. •
1st Earl Mountbatten of Burma (1900–1979), British naval officer. Knight grand cross, awarded 1951. •
John William McNee (1887–1984), British pathologist. •
Sven Thofelt (1904–1993), Swedish military officer and Olympian. Awarded commander class. •
Brudenell White (1876–1940), Australian general. Awarded as a grand officer. •
James Yeo (1782–1818), Royal Navy, 1809. ==See also==