The American Association for State and Local History (AASLH) is a non-profit association for state and local history, with a primary focus on museums and historical societies. It is headquartered in Nashville, TN, and has over 6,300 members.[1] In response to indications from small museums that the accreditation process of the American Association of Museums was unattainable, AASLH launched the "Standards and Excellence Program for History Organizations," or StEPS. As opposed to a certification program, StEPS is a self-study program without a set timeline. AASLH hosts an annual conference, educational workshops around the country, and webinars.
 

The American Association of Museums, now named the American Alliance of Museums, (AAM) is a non-profit association that has brought museums together since its founding in 1906, helping develop standards and best practices, gathering and sharing knowledge, and advocating on issues of concern to the museum community. AAM is dedicated to ensuring that museums remain a vital part of the American landscape, connecting people with the greatest achievements of the human experience, past, present and future. AAM is the only organization representing the entire scope of museums and professionals and nonpaid staff who work for and with museums. AAM currently represents more than 15,000 individual museum professionals and volunteers, 3,000 institutions and 300 corporate members. Individual members span the range of occupations in museums, including directors, curators, registrars, educators, exhibit designers, public relations officers, development officers, security managers, trustees and volunteers. Every type of museum is represented by the more than 3,000 institutional members, including art, history, science, military, maritime, and youth museums, as well as public aquariumszoosbotanical gardensarboretums, historic sites, and science and technology centers. According to the American Association of Museums, there are at least 17,500 museums in the US.

  The mission of the Association of Art Museum Curators is to support and promote the work of museum curators by creating opportunities for networking, collaboration, professional development, and advancement.
In support of these aims, the AAMC Foundation seeks to heighten public understanding of the curator’s role in art museums through professional development programs, awards, and grants. 
  The International Council of Museums (ICOM) is the only international organisation representing museums and museum professionals.
Since 1946, ICOM has assisted members of the museum community in their mission to preserve, conserve and share cultural heritage. ICOM also takes advice from institutional partners to achieve its objectives. 
ICOM is governed in an inclusive and hierarchical manner, on an international level.  The organisation gathers almost 30,000 members and is made up of National Committees, which represent 137 countries and territories, and International Committees, which gather experts in museum specialties worldwide.
ICOM Secretariat is situated at UNESCO House, Paris, France.