War on Want (WOW)

War Resisters League (WRL)

WarIsACrime.org (formerly After Downing Street)

Washington Center for Equitable Growth (WCEG)

Waterkeeper Alliance (WA)

We Are America Alliance (WAAA)

We Believe Together – Health Care for All (WBT)

We the People Project (WPP)

Weather Underground Organization (WU)

Weatherman

Welcoming America

Wellspring Advisors

Wheels of Justice (WOJ)

When We All Vote (WWAV)

Wieboldt Foundation

WikiLeaks (WL)

Wikipedia

Wilderness Society (WS)

Wildlands Conservancy (WC)

Wildlife Conservation Society (WCS)

William and Flora Hewlett Foundation

Win Without War (WWW)

Winning Connections (WC)

Witness For Peace (WP)

Women Against Military Madness (WAMM)