Amman Chamber Orchestra (ACO), formerly known as the Etihad Chamber Orchestra, is an Amman-based orchestra with a focus on musicians from the Arab world. ACO musicians have so far come from Jordan, Palestine, Syria, Lebanon, Egypt, Oman, Japan, the United Kingdom, Sweden, Germany, Ukraine, Romania, South Korea, Switzerland, Belorussia, Spain, Russia, Portugal, Cuba, Turkey and the United States of America.