Patient-Centered Outcomes Research Institute

The Washington Institute for Near East Policy (WINEP or TWI, also known simply as The Washington Institute) is a pro-Israel American think tank based in Washington, D.C., focused on the foreign policy of the United States in the Near East. WINEP was established in 1985 with the support of the American Israel Public Affairs Committee (AIPAC) and the funding of many AIPAC donors, in order to provide higher quality research than AIPAC's publications. John Mearsheimer and Stephen Walt described WINEP as "part of the core" of the Israel lobby in the United States.

The Competitive Enterprise Institute (CEI) is a non-profit libertarian think tank founded by the political writer Fred L. Smith Jr. on March 9, 1984, in Washington, D.C., to advance principles of limited government, free enterprise, and individual liberty. CEI focuses on a number of regulatory policy issues, including business and finance, labor, technology and telecommunications, transportation, food and drug regulation, and energy and environment in which they have promoted climate change denial. Kent Lassman is the current President and CEO. According to the 2017 Global Go To Think Tank Index Report (Think Tanks and Civil Societies Program, University of Pennsylvania), CEI was number 59 (of 90) in the "Top Think Tanks in the United States".

1875 K Street is a mid-rise office building located in the United States capital of Washington, D.C. The building began construction in 2000, and was completed in 2001. Upon completion, the building rose to 155 feet (47 m), featuring 12 floors and 5 elevators. The architect of the building was Hartman-Cox Architects, who designed the postmodern design of the building. The building was sold to Shorenstein Properties in 2005 for $113 million.Law firm Willkie Farr & Gallagher is the anchor tenant in the building. Foley Hoag also has its Washington office in this building, There also was a Così restaurant located in the building, which was replaced by a Protein Bar in 2014.

1111 19th Street is a high-rise office building in Washington, D.C. The building rises 12 floors and 157 feet (48 m) in height. The building was designed by architectural firm Heery International and was completed in 1979. As of July 2008, the structure stands as the 24th-tallest building in the city, tied in rank with 1620 L Street, 1333 H Street, 1000 Connecticut Avenue, The Republic Building, 1010 Mass, the Army and Navy Club Building and the Watergate Hotel and Office Building. 1111 19th Street is an example of modern architecture, and is composed almost entirely of office space, with 827,000 square feet (77,000 m2) of commercial area; the three basement levels are used as parking space, containing a 278-spot parking garage.

The Center for Education Reform is an education reform organization headquartered in Washington, D.C. Founded in 1993, CER advocates for school choice.

The National Center for Transgender Equality (NCTE) is a nonprofit social equality organization founded in 2003 by transgender activist Mara Keisling in Washington, D.C. The organization works primarily in the areas of policy advocacy and media activism with the aim of advancing the equality of transgender people in the United States. Among other transgender-related issue areas, NCTE focuses on discrimination in employment, access to public accommodations, fair housing, identity documents, hate crimes and violence, criminal justice reform, federal research surveys and the Census, and health care access.

The National Association for Biomedical Research (NABR) is an American nonprofit organization, 501(c)(6), located in Washington, DC. NABR was formed in 1985 when the Association of Biomedical Research merged with the National Society for Medical Research The NABR advocates for the continued use of animals in biomedical research albeit in as humane a manner as possible.

Population Services International (PSI) is a 501(c)(3) registered nonprofit global health organization with programs targeting malaria, child survival, HIV, and reproductive health. PSI provides products, clinical services and behavior change communications for the health of people in high-need populations.

The Golden Triangle is a neighborhood and business improvement district (BID) in Washington, D.C. Covering 43 blocks, it encompasses the western part of Washington's central business district, running from the front yard of the White House's north side to Dupont Circle and from 16th Street NW to 21st Street NW and including sections of K Street and Connecticut Avenue. The commercial neighborhood is home to more than 3,000 organizations, 200 restaurants, 300 shops and retailers, 7 hotels, and 6 national parks.The Golden Triangle BID was created in 1997 by the District of Columbia City Council and approved by Mayor Marion Barry.The Golden Triangle BID is supported by a special assessment collected by the District of Columbia from owners of property within the BID's boundaries. Businesses that are located within the Golden Triangle BID's boundaries are automatically members of the BID. The BID is governed by a board of directors composed of up to twenty-three such members.

The Independent Women's Forum (IWF) is a conservative American non-profit organization focused on economic policy issues of concern to women. IWF was founded by activist Rosalie Silberman to promote a "conservative alternative to feminist tenets" following the controversial Supreme Court nomination of Clarence Thomas in 1992. IWF's sister organization is the Independent Women's Voice (IWV), a 501(c)(4) organization. The group advocates "equity feminism," a term first used by IWF author Christina Hoff Sommers to distinguish "traditional, classically liberal, humanistic feminism" from "gender feminism", which she claims opposes gender roles as well as patriarchy. According to Sommers, the gender feminist view is "the prevailing ideology among contemporary feminist philosophers and leaders" and "thrives on the myth that American women are the oppressed 'second sex.'" Sommers' equity feminism has been described as anti-feminist by critics.

1900 K Street is a high-rise building located in Washington, D.C., United States. The building broke ground in 1995, with its construction being completed in 1996. The building rises to 52 metres (171 ft), containing 13 floors and a total floor area of 102,851 m2. The architect of the building was Cesar Pelli & Associates Architects, who designed the postmodern architectural style of the building, which is built with glass and steel material. The building serves for office use. The building is managed by Hines, Inc.

The Center for Strategic and International Studies (CSIS) is an American think tank based in Washington, D.C. CSIS was founded as the Center for Strategic and International Studies of Georgetown University in 1962. The center conducts policy studies and strategic analyses of political, economic and security issues throughout the world, with a specific focus on issues concerning international relations, trade, technology, finance, energy and geostrategy.In the University of Pennsylvania's 2019 Global Go To Think Tanks Report, CSIS is ranked the number one think tank in the United States across all fields, the "Top Defense and National Security Think Tank" in the world, and the 4th best think tank in the world overall. CSIS has been named the number one think tank for Defense and National Security for the past seven years, and has been declared the 'Center of Excellence'.Since its founding, CSIS "has been dedicated to finding ways to sustain American prominence and prosperity as a force for good in the world", according to its website. CSIS is officially a bipartisan think tank with scholars that represent varying points of view across the political spectrum. The think tank is known for inviting well-known foreign policy and public service officials from the U.S. Congress and the executive branch, including those affiliated with either the Democratic or the Republican Party as well as foreign officials of varying political backgrounds. It has been labeled a "centrist" think tank by U.S. News & World Report.The center hosts the Statesmen's Forum, a bipartisan venue for international leaders to present their views. Past speakers have included UN Secretary General Ban Ki Moon and National Security Advisor Tom Donilon. The center also conducts the CSIS-Schieffer School Dialogues, a series of discussions hosted by Bob Schieffer, of CBS News, in addition to the Global Security Forum, with keynote addresses by Defense Department officials including former Secretary of Defense Chuck Hagel.