The term Liga Nobiliaria is generally used to designate political movements of nobles of the Kingdom of Castile that arose in the 14th and 15th centuries. They are equivalent to today's parties, and were motivated mainly by attempts of monarchs to diminish the opposition's powers and privileges.

On 5 June 1465, in a location around Ávila, a group of Castilian noblemen deposed of King Henry IV of Castile in effigy, and instead proclaimed his half-brother Prince Alfonso, better known as "Alfonso the Innocent", as king. This ceremony became known by its detractors as the farce of Ávila.