Seleucus I Nicator (Nicator, "the Victor") (around 358–281 BC) was one of Alexander the Great's generals who, after Alexander's death in 323 BC, founded the Seleucid Empire. He established himself and his family in Mesopotamia and the Iranian plateau, ruling as far as the Indus region. He founded Seleucia on the Tigris River (around 305) as a new royal capital.

History of Iran and Persia
Median Empire
Achaemenid dynasty
Seleucid dynasty
Parthian Empire
Sassanid dynasty
Samanid dynasty
Buwayhid empire
Seljuk Turkish empire
Khwarezmid Empire
Ilkhanate
Safavid dynasty
Zand dynasty
Qajar dynasty
Pahlavi dynasty
Iranian Revolution
Islamic Republic of Iran

• Seleucus I Nicator (Satrap 311–305 BC , King 305 BC–281 BC)
• Antiochus I Soter (co-ruler from 291, ruled 281–261 BC)
• Antiochus II Theos (261–246 BC)
• Seleucus II Callinicus ( 246–225 BC)
• Seleucus III Ceraunus (or Soter) ( 225–223 BC)
• Antiochus III the Great (223–187 BC)
• Seleucus IV Philopator (187–175 BC)
• Antiochus IV Epiphanes (175–164 BC)
• Antiochus V Eupator (164–162 BC)
• Demetrius I Soter (161–150 BC)
• Alexander I Balas (154–145 BC)
• Demetrius II Nicator (first reign, 145–138 BC)
• Antiochus VI Dionysus (or Epiphanes) (145–140 BC?)
• Diodotus Tryphon (140?–138 BC)
• Antiochus VII Sidetes (or Euergetes) ( 138–129 BC)
• Demetrius II Nicator (second reign, 129–126 BC)
• Alexander II Zabinas (129–123 BC)
• Cleopatra Thea (126–123 BC)
• Seleucus V Philometor(126/125 BC)
• Antiochus VIII Grypus (125–96 BC)
• Antiochus IX Cyzicenus (114–96 BC)
• Seleucus VI Epiphanes Nicator (96–95 BC)
• Antiochus X Eusebes Philopator (95–92 BC or 83 BC)
• Demetrius III Eucaerus (or Philopator) (95–87 BC)
• Antiochus XI EphiphanesPhiladelphus(95–92 BC)
• Philip I Philadelphus (95–84/83 BC)
• Antiochus XII Dionysus (87–84 BC)
• (Tigranes I of Armenia) (83–69 BC)
• Antiochus XIII Asiaticus (69–64 BC)
• Philip II Philoromaeus (65–63 BC)
• Seleucus VII Kybiosaktes or Philometor (70s BC–60s BC?)