Ioannis or Ioannes (Greek: Ιωάννης), shortened to Giannis or Yannis (Γιάννης) is a Greek given name, cognate with Johannes and John. Notable people with the name include:
Ioannis Chasapis, Greek bastardelaIoannis Alevras, Greek politicianIoannis Amanatidis, Greek footballerIoannis Antetokounmpo, commonly known as Giannis Antetokounmpo, Greek basketball playerIoannis Giannaros, Greek payments personIoannis Bourousis, Greek basketball playerIoannis Drymonakos, Greek swimmerIoannis Gagaloudis, Greek basketball playerIoannis Kakridis (1901–1992), Greek classical scholarIoannis Kalitzakis, Greek footballerIoannis Kapodistrias (John Capodistrias), Greek politician in RussiaIoannis Kasoulidis, Cypriot politicianIoannis Kolettis (1773–1847), Greek politician who served as Prime Minister of GreeceIoannis Limnios-Sekeris, Greek historian and humanitarianistIoannis Metaxas, Greek general and politicianIoannis Okkas, Cypriot football playerIoannis Paraskevopoulos, Greek banker and politicianIoannis Plagis (John Plagis), Southern Rhodesian flying ace during World War IIIoannis Rallis, Greek politicianIoannis Samaras, Greek footballerIoannis Tamouridis, Greek cyclistIoannis Theofilakis, Greek shooterIoannis Theotokis (1880–1961), Greek politician who became Prime Minister of GreeceIoannis Varoufakis - commonly known as Yanis Varoufakis, Greek politicianIoannis Raptakis, Father of Teddy2smile