Eurydice III (Greek: E) υρυδικη ；?～ In 317 BC, she was the queen of Philip III of the Macedonian Empire. Her father was the abdicated Macedonian king Amentas IV, and her mother was Kunane, the daughter of Philip II and Odata. Eurydice ascended to the throne shortly after the death of Alexander the Great. She had great political ambitions and attempted to use the name of Philip III to control the political situation during the First and Second Successor Wars.

Eurydice was known as Adia in her early years, but historical records do not record when she changed her name to Eurydice because her father was executed early on and she was raised by her mother Kunane. During her upbringing, her mother Kunane seemed to have taught Eurydice horseback riding, hunting, and combat, just like her grandmother Odata had taught Kunane these skills back then.
Philip III was the half brother of Alexander the Great, but his intelligence was questionable. Therefore, initially, Philip II did not pass the throne to the older brother, but to Alexander the Great. When Alexander went on an expedition to Persia, he also brought his brother to the east. In 323 BC, Alexander the Great passed away and did not leave any adult offspring. Therefore, Philip III, the uncle of Eurydice, was chosen as one of the new kings. With Alexander's passing, his generals each had their own ulterior motives. At this time, Philip, who could not personally take on state affairs, and Alexander IV, who was not yet born, were elected as kings, putting the power of the time in the hands of the regent of the empire, Perdiccas. After learning that Philip III was elected as king in Babylon, Kunane, who stayed in Macedonia, decided to take Eurydice to Babylon, preparing to marry Eurydice to Philip III and make his daughter the queen. When they arrived in Asia Minor, Arcetas, the brother of Imperial Regent Perdiccas, led his army to cut off their route and executed Kunane. However, the act of executing members of the royal family caused strong dissatisfaction among Macedonian soldiers, and Perdiccas had no choice but to marry Philip III and Eurydice to appease the soldiers.

The historical records do not record Eurydice's actions during the reign of Perdiccas, and it is possible that Perdiccas did not give her the opportunity to take power. In 321 BC, the First Successor War ended with the assassination of Perdiccas, and Eurydice decided to seize this opportunity to gain power. She demanded partial power from the newly appointed Regents of the Empire, Persson and Aridaus, and her queen's position attempted to incite Macedonian soldiers in the royal army to support her in an attempt to gain power in this tumultuous moment. After a prolonged struggle, Eurydice successfully defeated the new regent and issued orders in the name of Philip III during this brief period of time, which made her play an important role in the meeting of the Triparadusus enfeoffment agreement in 321 BC.
Eurydice's good luck did not last long. At that time, important Macedonian politicians Antipater and veteran Antiochus were also involved in the campaign against Perdiccas. They led a large army through Asia Minor to Syria and joined forces with other Macedonian strongholds. The highly esteemed Antipater is likely to be elected as the new regent of the Empire at the Triparadusus Conference, which will be a major setback for Eurydice's struggle for power, as she will not have a political stage under Antipater. Therefore, Eurydice decided to obstruct Antipater in order to avoid losing control of the Macedonian royal army. She publicly gave a speech before a military rally, which clearly violated the taboo of male centeredness in ancient Greece where women were not allowed to speak publicly. Not to mention, she declared her opposition to Antipater in her speech. However, Eurydice's speech was very successful, as she successfully stirred up the emotions of the soldiers with military pay. When Antipater went to see these excited soldiers with a few guards, he almost died. Ancient historians believe that Eurydice's speech was written by her secretary Asclepiodorus. However, despite successfully stirring up the emotions of lower Macedonian soldiers, Eurydice did not win the support of other important Macedonian officers in the upper echelons. Eurydice's plan ultimately failed, and Antipater was elected as the new regent of the empire in the meeting.

After Antipater came to power, he returned to Macedonia with members of the royal family. During this period, the power of Eurydice greatly decreased, and it was not until Antipater's death in 319 BC that a turning point occurred. Before his death, Antipater appointed Polibercon as regent of the empire, but this caused dissatisfaction from Antipater's son Cassander. With the death of Antipater, the governors in the eastern part of the empire also became restless. With the help of Antiochus, Cassander openly rebelled against the power of Polibercon, and the Second War of Successors broke out. Polybercon formed an alliance with Olympias, the mother of Alexander the Great, and personally led his army south to Greece to confront Cassander. Eurydice was dissatisfied with Polybercon's inclination towards Olympias. She took advantage of Polybercon's absence from Macedonian territory to seize power. She also allied with Cassander and appointed him as the legitimate regent in the name of Philip III. At this time, Olympias stayed in the court of her mother's house Epirus and prepared to lead an army with Epirus King Aekades to aid Polybercon. They began to march towards Macedonia. Eurydice learned of the actions of Epirus's army, and although her foundation was not yet firmly established, she had to form an army and personally led Philip III to resist the enemy. Although there was another young Macedonian king Alexander IV and his mother Roxana in the army of Epirus, the most influential figure in the war was still Olympias, because the soldiers in Eurydice's Macedonian army did not want to be enemies with Alexander's mother. They rallied to join Olympias, and in the end, Eurydice was defeated and fled to Amphipolis, but the city was eventually captured, Eurydice and Philip III both became prisoners of Olympias.

Eurydice and her husband Philip III were imprisoned in a small dungeon, and their daily food was also quite scarce. But soon, some Macedonians began to sympathize with their plight, which alerted Olympias and decided to eradicate Eurydice and Philip III. Olympias ordered someone to give the young queen Eurydice a sword, a pair of ropes, and a cup of poison, asking her to choose the appropriate way of death. Eurydice's fighting spirit at this moment has not yet been defeated. She still hates Olympias and curses that she will soon receive the same gift as herself. Then, after Eurydice fulfilled her final duty to her husband, she hanged herself and ended her life. During this time, she did not cry or beg for mercy at all. Philip III was subsequently executed. When Cassander counterattacked and returned to Macedonia, he avenged Eurydice and Philip III, executed Olympias, and buried Eurydice and Philip III together in the royal cemetery in the old Macedonian capital of Eg.