23rd Senate of Puerto Rico 23rd Street viaduct 23rd Lima Film Festival 23rd Congress of the Communist Party of the Soviet Union 23rd Canadian Parliament March 23 2009 New York's 23rd congressional district special election 23rd Street station (IRT Third Avenue Line) 23rd Hong Kong Film Awards December 23 23rd Street Twenty-third Amendment to the United States Constitution ARITH Symposium on Computer Arithmetic 3rd millennium