The Popular Alliance (Italian: Alleanza Popolare, AP) was a liberal-centrist political party in San Marino.

AP was born as an anti-establishment party in 1993, in parallel with the rise of Lega Nord in Italy, of which it has been long considered the Sanmarinese counterpart, but has since then become a stable political force in San Marino, participating in government coalitions with the centrist Sammarinese Christian Democratic Party (PDCS), as well as with the centre-left Party of Socialists and Democrats (PSD) since 2002.

In 2008 after the breaking-up of the governing coalition, due to the rising clashes between AP and United Left, under the new electoral system, the party decided to join PDCS in the centrist Pact for San Marino coalition for the 2008 general election, gaining 11.5% of votes and 7 seats out of the 35 of the coalition gained and 11.52% of the national vote.

After the political crisis of 2011, AP confirmed its alliance with PDCS, creating the new alliance San Marino Common Good, which won the 2012 Sammarinese general election, even though AP itself lost three seats.

On 24 February 2017, AP and UpR officially merged and formed Future Republic as a political party.