The Independent Irish Party (IIP) was the designation chosen by the 48 Members of the United Kingdom Parliament returned from Ireland with the endorsement of the Tenant Right League in the 1852 general election. The League had secured their promise to offer an independent opposition (refusing all government favour and office) to the dominant landlord interest, and to advance an agrarian reform programme popularly summarised as the "three F's": fair rent, fixed tenure and free sale.
The unity of the grouping was compromised by the priority the majority gave to repealing the Ecclesiastical Titles Act, legislation passed by the Liberal government of Lord John Russell to hamper the restoration in the United Kingdom of a Catholic episcopate, and their independence by the defection of two of their leading members to a new Whig-Peelite government.