Union Adventist University (formerly Union College) is a private college in Lincoln, Nebraska, United States. Known as Union College from 1891 to May5, 2024, it is owned and operated by the Mid-America Union Conference of the Seventh-day Adventist Church. It is accredited by the Adventist Accrediting Association (AAA) and the Higher Learning Commission. It is a part of the Seventh-day Adventist education system, the world's second largest Christian school system.