During the last week in June 2011, the Office of Advocacy hosted a series of roundtable discussions in each of the ten SBA regions.

The Office hosted its Bidders' Conference on October 17, 2011, at the Department of State in Washington, DC.

JPL's Office of the CIO hosted a laboratory-wide Cloud Computing Day on May 12.

DWP and the Office of the Third Sector hosted two sub contractor events on the 8 September 2009 in Newcastle and 9 September 2009 in London.

The Office of National AIDS Policy (ONAP) hosted the second in a series of five Implementation Dialogues.

In 1965 the Comptroller's Office hosted V INCOSAI, the fifth triennial convention of the International Organization of Supreme Audit Institutions.

The Sheriff's Office hosted a crooked poker game.

The Office also hosted public roundtable discussions on orphan works in Washington, D.C., on July 26 and 27, 2005, and in Berkeley, California, on August 2, 2005.

The Office also hosted several informal meetings with various parties in late 2005 to address issues in further detail.

On April 17, 2012, Planet Forward and The George Washington University's Office of Sustainably hosted a "Turning Innovation into Action" symposium.