János Lászai (also Lazói or Lázói, Latin: Johannes de Lazo, English: John Lazinus; 1448 – 17 August 1523) was a Hungarian Humanist poet and clergyman.

[3] According to contemporary records, he was an excellent orator and poet, understood mathematics and spoke Latin, Italian, Greek and "Slavic" beside his native Hungarian (but "knowing not one word of German", as Felix Fabri emphasized).

[4] He became a prominent member of that Transylvanian Humanist scholar circle, which based in Gyulafehérvár under the guidance of Bishop Ladislaus Geréb (a cousin of King Matthias Corvinus).

He was granted nobility by King Matthias Corvinus in November 1489, who also donated a joint Renaissance-style coat-of-arms to him and his relatives, Anthony Sánkfalvi and some members of the Hős (Heős) family.

[9] Lászai visited the Roman Curia in the spring of 1500 in order to grant permission from Pope Alexander VI to erect a chapel, who allowed it, but the subsequent death of Geréb (1502) hindered the implementation of his plans.

For now, he was the leader of the pilgrimage, and guided his two fellow Hungarian travelers, Francis of Pannonia, a canon of Pécs and Michael Pesti, a cleric at Vác.

[10] In 1508, Lászai's stepfather John Barlabássy made his last will and testament, in which he bequeathed to his "dearest stepson" a significant amount in the form of a right to recover debts.

[14] However, János Lászai – just like the majority of the canons – had deteriorating relationship with the new Bishop of Transylvania Francis Várdai (1513–1524), who was an advocate of Humanist arts and sciences, but because of his incompatible personality, he had a conflict with many clergymen in the diocese.

[19] Lászai's grave still can be found today with the circumscription: "Io(hannes) Lazo archidi(aconus) Transil(vaniensis) panno(nius) penit(entiarius) ap(ostolicus) dum ann(um) ageret LXXV obiit XVII aug(usti) M.D.XXIII".

Altogether eight epigrams of János Lászai were survived over the centuries in the following ways:[21] According to his biographer Sándor V. Kovács, "in his day, proficiency in the craft of poetry was essential at some level of education.