The goddess of wisdom and strategy in ancient Greek beliefs is Athena. Revered for her intelligence and prowess in warfare, she embodies both military might and civil governance. Athena is often depicted with symbols such as the owl and the olive tree, representing wisdom and peace, respectively. She played a pivotal role in various myths, including assisting heroes in their quests and serving as the protector of the city of Athens, illustrating her integral role in Greek culture and civilization.