The GABC Oktoberfest is an annual celebration of German-American friendship on Capitol Hill in a traditional Oktoberfest style, first held in 2006. This casual, reception-style event brings together GABC members, Members of the German-American Congressional Caucus, diplomats from the German Embassy, the Washington, D.C. diplomatic community, and friends of the GABC.

The 2025 Oktoberfest on the Hill will be held on September 17. This event is by invitation only.