List of United States political families (I)

This page lists notable political families in the United States whose surnames begin with the letter "I." Political families are defined as those with multiple members who have held significant elected or appointed political offices at the local, state, or federal level. Inclusion on this list requires demonstration of a sustained pattern of political activity across multiple generations or siblings.

Entries include the family name, a brief description of the family's political involvement, and prominent family members with their respective offices held. This list aims to provide a genealogical overview of political dynasties and the recurring presence of certain families in American political life. The information is compiled from publicly available sources and is subject to ongoing revision and expansion.