Preservation Worcester is a historic preservation non-profit organization based in Worcester, Massachusetts. Founded in 1969, their mission is to maintain and protect the city's significant sites and structures that represent its culture, history, and architecture. Through advocacy, education, and action, Preservation Worcester strives for excellence in preservation.

The organization works collaboratively with various stakeholders, including neighborhood groups, developers, city departments, officials, schools, and cultural organizations, as well as state and local historical commissions. Together, they aim to safeguard Worcester's architectural heritage, promote good design, and foster community pride and identity. Preservation Worcester has a rich history of successfully preserving and safeguarding important structures in the city, such as Mechanics Hall, Union Station, the Chestnut Street Church, the Fire Alarm & Telegraph Building, and the Quinsigamond School.

With over 600 active members and a dedicated staff, Preservation Worcester continues to make a lasting impact on the city's architectural legacy. Through their efforts, they ensure that future generations can appreciate and enjoy Worcester's unique cultural and historical treasures