Bush Bashing is essentially the act of defaming United States President George W. Bush, an activity that has gained momentum in the United States by individuals and groups, political and otherwise, unhappy with the president and his policies, decisions and beliefs.

Supporters of the Democratic Party, as well as many Libertarians, oppose Bush's fiscal and environmental policies, such as tax breaks for the wealthiest Americans despite a record budget deficit and for not supporting the Kyoto protocol), as well as potential interference in civil liberties through support for laws banning or restricting, among other things, abortion and same sex marriage. Many people are also concerned of his support for faith based organizations, citing the potential for a breakdown of the constitutional separation of church and state. Many also claim that Bush is an incompetent leader, and that money and his family played a significant role in his election.

Bush bashing is nearly commonplace is many other countries, such as in Europe and the middle east, as well as Canada and Mexico and many others, where Bush is extremely unpopular among the general public primarily because of current US policy and the war in Iraq.