Christianity is a minority religion in Yemen

Yemen

The Republic of Yemen , commonly known as Yemen , is a country located in the Middle East, occupying the southwestern to southern end of the Arabian Peninsula. It is bordered by Saudi Arabia to the north, the Red Sea to the west, and Oman to the east....

. The constitution mentions religious liberty.

History

There are about 4000 Catholics in Yemen. They belong to the
Apostolic Vicariate of Arabia. The World Christian Encyclopedia

World Christian Encyclopedia

World Christian Encyclopedia is a reference work published by Oxford University Press, known for providing membership statistics for major and minor world religions in every country of the world, including historical data and projections of future populations.The first edition, by David B. Barrett,...

, Second edition, Volume 1, states the Ethiopian Orthodox Church and the Russian Orthodox Church

Russian Orthodox Church

The Russian Orthodox Church or, alternatively, the Moscow Patriarchate The ROC is often said to be the largest of the Eastern Orthodox churches in the world; including all the autocephalous churches under its umbrella, its adherents number over 150 million worldwide—about half of the 300 million...

 as largest denominations in Yemen. In Aden there are three Catholic and one Anglican church. In San'a there are weekly Protestant services. Christian missions from several countries are active in Yemen. There are hospitals that belong to foreign Christian institutions.