The goddess associated with harvest and fertility in Greek mythology is Demeter. She is revered for her role in agriculture, particularly in the cultivation of grains and the nurturing of the earth's bounty. Demeter's most famous myth involves her daughter, Persephone, who is abducted by Hades. This myth explains the cycle of seasons, symbolizing life, death, and rebirth. Demeter's influence is evident in various rituals and festivals, emphasizing the importance of agriculture and the connection to the earth's cycles.