Diamandis or Diamantis () is a Greek name. Notable people with this name include:
Last name Apostolos Diamantis (born 2000), Greek association football player Artemas Diamandis (born 1999), English singer-songwriter Dimitris Diamantis (born 1979), Greek association football player Eleftherios Diamandis (born 1952), Cypriot biochemist Georgios Diamantis, Greek Olympic sport shooter Georgios Diamantis (footballer) (born 1979), Greek association football player Marina Diamandis (born 1985), Greek-Welsh singer Peter Diamandis (born 1961), Greek American engineer
First name Diamantis Chouchoumis (born 1994), Greek association football player Diamantis Nikolaou (1790–1856), Greek Macedonian revolutionary Diamantis Panagiotopoulos (born 1967), Greek archaeologist Diamantis Slaftsakis (born 1994), Greek basketball player Diamantis Stagidis (born 1959), Greek painter
See also Diamanti (Diamandi)