20th century 201 1979-1997 149 To 640 129 1997- 120 1941-1979 75 21st century 71 Revolution, 1979 58 19th century 38 1900-1999 32 Qajar dynasty, 1794-1925 32 To 1500 30 Mohammad Reza Pahlavi, 1941-1979 21 1905-1911 17 16th-18th centuries 16 559-330 B.C. 16 2000-2099 14 640-1256 14 1925-1979 13 Pahlavi dynasty, 1925-1979 13 Ṣafavid dynasty, 1501-1736 12 1919-1980 11 approximately 423 B.C.-401 B.C. 11 17th century 10 559 B.C. B.C.-330 B.C. 10 Since 1979 10 Ṣafavid dynasty, 1501-1736 9 1256-1500 8 1945- 8 1945-1979 8 1979- 8 2003- 8 640-1500 8 Since 1997 8 1957- 7 Early works to 1800 7 Expedition of Cyrus, 401 B.C. 7 -530 B.C. or 529 B.C. 6 1800-1899 6 1880-1967 6 1900-2099 6 1977-1981 6 2009 6 247 B.C.-224 A.D. 6 356 B.C.-323 B.C. 6 1800-1999 5 1926-1984 5 To 622 5 1831-1896 4 1878-1944 4 18th century 4 1969- 4 1979 4 1993- 4 519 B.C.-465 B.C. or 464 B.C. 4 548 B.C.-485 B.C. 4 Coup d'état, 1953 4 To 634 4 -1030 3 10th century 3 1498-1761 3 1501-1736 3 1565-1635? 3 1571-1629 3 1581?-1628 3 1653-1713 3 16th century 3 1895-1989 3 1918-1945 3 1932-2018 3 1945-1989 3 1946- 3 1953- 3 1980- 3 1981-1989 3 1989- 3 2009-2017 3 640- 3 Expedition of Cyrus, 401 B.C 3 Macedonian Conquest, 334-325 B.C 3 Macedonian Conquest, 334-325 B.C. 3 Ottoman Empire, 1288-1918 3 Revolution, 1905-1907 3 Revolution, 1908 3 To 1258 3 active 10th century 3 -1779 2 -1895 or 1896 2 -337 2 -approximately 1230 2 0590?-0530 av. J.-C.) 2 1140 or 1141-1202 or 1203 2 1254-1323? 2 13th century 2 1414-1492 2 1564-1630? 2 1605-1689 2 1658 or 9-1694 2 1688-1747 2 1794-1925 2 1801-1917 2