Immigration reform is change to the current immigration policy of a country. In its strict definition, reform means "to change into an improved form or condition, by amending or removing faults or abuses". In the political sense, "immigration reform" may include promoted, expanded, or open immigration, as well as reduced or eliminated immigration.

The United Kingdom's decision to leave the European Union was in part driven by significant portions of the electorate having grievances about immigration law and the free movement of peoples into the UK.