Ioan Lupaș (9 August 1880 – 3 July 1967) was a Romanian historian, academic, politician, Orthodox theologian and priest.

In November 1907, Lupaș was brought to trial for seditious libel, being accused of having instigated the peasants to hatred against the landowners, and sentenced to three months imprisonment and a 200 Krone-fine.

[2] He served his three month-sentence in Szeged between August and October 1908,[2] forced out of the Institute in 1909, and appointed priest to the Săliște parish.

[2] After Romania's entry in World War I on the Allied side, Lupaș was exiled to Sopron County (western Hungary) and placed under house arrest.

In 1918, he was elected representative for Săliște in the Great National Assembly of Alba Iulia that declared the Union of Transylvania with the Kingdom of Romania.