Travel.mapsofworld.com provides information on Romania Visa Information

Romania Visa Information also informs the credentials that are required to obtain a tourist visa in Romania and the travelers must submit their passport which has a validity of at least 6 months beyond the period of stay and other documents include: 1 Visa Application Form fully completed and signed; 1 Passport-type photograph required; Completed Cover Page; Photocopy of Alien Registration Card; Photocopy of round-trip airliner tickets or itinerary; Proof of medical insurance valid in Romania for the duration of the visit and Proof of sufficient funds for the period of stay in Romania. The tourist visa application will be checked and hand carried to the Embassy and then it is usually processed in 72 hours but time of processing can vary.

Romania Visa Information further reveals that the citizens of the following countries are required to present an original official invitation issued through the Department of Immigration and Passports in Bucharest in order to obtain a visa: Armenia, Albania, Afghanistan, Algeria, Azerbaijan, Angola, Bangladesh, Belarus, Benin, Bhutan, Burkina Faso, Burundi, Cameroon, Cambodia, Cape Verde Rep., Central African Rep., P.R. China, Chad, Comoros, Congo Rep. Democratic Congo, Cote d'Ivoire, Djibouti, Dominican Rep, Egypt, Eritrea, Ethiopia, Equatorial Guinea, Fiji, Gabon, Gambia, Georgia, Ghana, Guinea Bissau, Guinea Rep., Guyana, Haiti, India, Iran, Iraq, Jordan, Kazakhstan, Kenya, Kirgyzstan, Korea-North, Laos, Lebanon, Liberia, Libya, Madagascar, Morocco, Maldives, Mauritania, Mauritius, Mongolia, Mozambique, Myanmar, Nepal, Niger, Nigeria, Pakistan, Palestine, Papua New Guinea, Peru, Philippines, Rwanda, Sao Tome and Principe, Senegal, Sierra Leone, Somalia, Sri Lanka, Sudan, Suriname, Syria, Tajikistan, Tanzania, Togo, Tunisia, Turkmenistan, Uganda, Uzbekistan, Vietnam, Yemen, and Zambia. The Romania tourist for non-US citizens is usually issued for a single entry for a period of 3 months from date of issue if the passport remains valid for a period of stay in Romania and do not exceed 60 days and multiple entry visas can be issued on special request.