Nicomedes

Nicomedes may refer to:

• Nicomedes (mathematician), ancient Greek mathematician who discovered the conchoid
• Nicomedes of Sparta, regent during the youth of King Pleistoanax, commanded the Spartan army at the Battle of Tanagra (457 BC)
• Saint Nicomedes, Martyr of unknown era, whose feast is observed 15 September

Four kings of Bithynia in Anatolia, 3rd–1st century BC:

• Nicomedes I of Bithynia, ruled 278–255 BC
• Nicomedes II of Bithynia, 149–127 BC
• Nicomedes III of Bithynia, 127–94 BC
• Nicomedes IV of Bithynia, 94–74 BC