The Italian Union of Seventh-Day Adventist Christian Churches (Italian: Unione Italiana delle Chiese Cristiane Avventiste del Settimo Giorno), part of the worldwide fellowship of the Seventh-day Adventist Church, is a Protestant denomination in Italy.
As of 2014, the denomination includes about 140 local churches, 10,000 members, and 15,000 supporters throughout Italy.
In 1986 the Union first signed an agreement with the Italian Council of Ministers, in accordance with article 8 of the Italian Constitution which regulates the relations with religious minorities. They later signed three successive agreements. The latter of these agreements was made law in 2009.