Djalma Pereira Dias dos Santos, known simply as Djalma Santos (Brazilian Portuguese: [diˈʒawmɐ ˈsɐ̃tus]; also spelled Dejalma Santos; 27 February 1929 – 23 July 2013) was a Brazilian footballer who starred for the Brazil national team in four World Cups and winning the 1958 and 1962 editions. Santos is considered to be one of the greatest right-backs of all time. While primarily known for his defensive skills, he often ventured upfield and displayed some impressive technical and attacking skills.

Along with Franz Beckenbauer and Philipp Lahm, he is one of only three players to be included into three FIFA World Cup All Star teams (in 1954, 1958 and 1962). He was unrelated to his frequent defensive partner Nilton Santos. He was named by Pelé as one of the top 125 greatest living footballers in March 2004. He is also one of the few footballers to have made over 1,000 professional appearances in his career.

Djalma Santos made history in the three big clubs he played for. Djalma was an idol at Palmeiras, where he played 498 games for nine years and won several titles, at Portuguesa, where he emerged in professional football and played 510 games, and at Atlético Paranaense, where he ended his career. Known as an exemplary player, he was never sent-off from the field.

Djalma Santos started his career in his hometown with Portuguesa. He initially played in the centre of defence, but was later moved to the right side of defense. He was part of one of the best Portuguesa teams of all time, where alongside players like Pinga, Julinho Botelho and Brandãozinho he won the Rio-São Paulo Tournament in 1952 and 1955 and the Blue Ribbon in 1951 and 1953. He is the second largest record holder of games played by the club, 434 in total, between the years 1949 and 1958, second only to Capitão, with 496 games.

At Palmeiras, with 498 games, he is the seventh player who wore most the "alviverde" {Green and White} jersey. He was featured in the first academy alongside stars such as Ademir da Guia, Julinho Botelho, Djalma Dias and Vavá. It was at Palmeiras that he won the greatest number of titles of his career: the Paulista Championship in 1959, 1963 and 1966; the Brazilian Championships of 1960, 1967 (Robertão) and Brazil Cup of 1967. In addition, he won the Rio-São Paulo Tournament in 1965.

For Atlético Paranaense he played until the age of 42, another unusual brand for soccer players.

Despite having only defended three clubs in his career, Djalma Santos once wore the jersey of São Paulo, even though he belonged to Palmeiras at the time. On 9 November 1960, he played as an honor guest in the celebrations of the inauguration of the Morumbi Stadium, in the victory over Nacional do Uruguay, by 3–0, with goals from Canhoteiro and Gino.

Santos made 98 official appearances for Brazil between 1952 and 1968, and was in the squad for four consecutive World Cups between 1954 and 1966. He made his first appearance against Peru in the Panamerican Championship. The match was drawn 0–0. He also made two unofficial appearances for Brazil.