2004 in radio

	… 1994; 1995; 1996; 1997; 1998; 1999; 2000; ; 2001; 2002; 2003; 2004; 2005; 2006; 2007; ; 2008; 2009; 2010; 2011; 2012; 2013; 2014 …;
	In music 2001 2002 2003 2004 2005 2006 2007 In television 2001 2002 2003 2004 2005 2006 2007 In film 2001 2002 2003 2004 2005 2006 2007
	Art; Archaeology; Architecture; Literature; Music; Philosophy; Science; +...

The year 2004 saw a number of significant events in radio broadcasting history.