The Cleveland Park Historical Society (CPHS) is a not-for-profit, member-supported, volunteer organization dedicated to preserving and enhancing the charm and vitality of the historic Cleveland Park neighborhood in Washington, DC. The mission of CPHS is to maintain and enhance the character and strength of Cleveland Park as an historic, multifaceted, urban residential neighborhood. CPHS focuses on preserving the architectural integrity, public spaces, and natural environment of the historic district.

They encourage restoration of historic structures and promote new construction that complements the neighborhood's character. Advocacy plays a significant role in their work, as they strive to protect residential and commercial architecture, streetscapes, and natural features within the historic district. In addition to preservation efforts, CPHS sponsors educational activities, research, and public programming to further their preservation goals.

They aim to engage the community and raise awareness about the rich history of Cleveland Park. Everyone is welcome to join CPHS and become a part of their mission. By becoming a member, individuals can contribute to the preservation and enhancement of this vibrant and historic neighborhood