Lazaros Vizantiadis (Greek: Λάζαρος Βυζαντιάδης; 2 April 1938 – May 2008) was a Greek chess International Master (IM) (1969), two-times Greek Chess Championship winner (1965, 1966).

From the 1960s to the begin 1980s Lazaros Vizantiadis was one of Greek leading chess players. He twice won Greek Chess Championship: in 1965, and 1966. In 1967, in Vrnjačka Banja Lazaros Vizantiadis participated in World Chess Championship European Zonal Tournament where shared in 17th–18th place.^[1]

Lazaros Vizantiadis played for Greece in the Chess Olympiads:^[2]

• In 1962, at fourth board in the 15th Chess Olympiad in Varna (+2, =1, -8),
• In 1964, at third board in the 16th Chess Olympiad in Tel Aviv (+4, =5, -6),
• In 1966, at first board in the 17th Chess Olympiad in Havana (+6, =6, -6),
• In 1968, at first board in the 18th Chess Olympiad in Lugano (+3, =5, -6),
• In 1970, at second board in the 19th Chess Olympiad in Siegen (+2, =5, -6),
• In 1972, at second board in the 20th Chess Olympiad in Skopje (+4, =5, -7),
• In 1974, at fourth board in the 21st Chess Olympiad in Nice (+9, =4, -5).

Lazaros Vizantiadis played for Greece in the European Team Chess Championship preliminaries:^[3]

• In 1970, at first board in the 4th European Team Chess Championship preliminaries (+0, =3, -3),
• In 1973, at second board in the 5th European Team Chess Championship preliminaries (+1, =1, -1),
• In 1977, at fourth board in the 6th European Team Chess Championship preliminaries (+0, =1, -1),
• In 1980, at fourth board in the 7th European Team Chess Championship preliminaries (+0, =1, -0).

Lazaros Vizantiadis played for Greece in the Men's Chess Balkaniads:^[4]

• In 1971, at first board in the 3rd Men's Chess Balkaniad in Athens (+0, =3, -1),
• In 1972, at second board in the 4th Men's Chess Balkaniad in Sofia (+0, =1, -3),
• In 1973, at second board in the 5th Men's Chess Balkaniad in Poiana Brașov (+0, =3, -1),
• In 1975, at first board in the 7th Men's Chess Balkaniad in Istanbul (+0, =2, -2),
• In 1976, at first board in the 8th Men's Chess Balkaniad in Athens (+1, =1, -2),
• In 1977, at third reserve board in the 9th Men's Chess Balkaniad in Albena (+0, =3, -1),
• In 1978, at sixth board in the 10th Men's Chess Balkaniad in Băile Herculane (+0, =2, -2).

In 1969, Lazaros Vizantiadis was awarded the FIDE International Master (IM) title.