The primary deities in the Yoruba belief system include Olodumare (the supreme god), Obatala (associated with wisdom and purity), Ogun (the god of iron and war), and Yemaya (the goddess of the sea). These deities govern various aspects of life, nature, and human experiences, serving as avenues for worshipers to seek guidance and support. Together, they reflect the Yoruba cultural values and the importance of spirituality in daily living.