Keith Partridge is a fictional character from the 1970s television series The Partridge Family. He is portrayed by actor David Cassidy and is the eldest son of the Partridge family, a musical group that travels and performs together. Keith is known for his good looks, charm, and talent as a singer and songwriter. In the show, Keith often finds himself in various teenage dilemmas, balancing his music career with typical adolescent challenges. The series highlights the dynamics of family life and the ups and downs of being a young performer in the entertainment industry.