The Broadcast Decency Enforcement Act of 2005 is an enrolled bill, passed by both Houses of the 109th United States Congress, to increase the fines and penalties for violating the prohibitions against the broadcast of obscene, indecent, or profane language. It was originally proposed in 2004 as the Broadcast Decency Enforcement Act of 2004 ; this preliminary bill was never passed. Republican Senator Sam Brownback of Kansas sponsored both United States Senate bills; Senators Joe Lieberman (D-Conn.), Lindsey Graham (R-S.C.), Rick Santorum (R-Pa.), George Allen (R-Va.) initially co-sponsored the bill at its reintroduction on January 26, 2005.

Samuel Dale Brownback is an American attorney, politician, and diplomat who served as a United States senator from Kansas from 1996 to 2011 and as the 46th governor of Kansas from 2011 to 2018. A member of the Republican Party, Brownback also served as the United States Ambassador-at-Large for International Religious Freedom during the administration of President Donald Trump and was a candidate for the Republican nomination for President in 2008.