The Union for Change Party (Partido Unión para el Cambio) was a political party in Costa Rica. Founded by former minister and congressman Antonio Álvarez Desanti after he left National Liberation Party unhappy with his faction’s results in the internal elections against Óscar Arias. Desanti was the party’s presidential nominee.
In the 2006 general elections, they won 2.4% of the legislative votes, and 2.44% of the Presidential vote. They were unable to win any seats in the legislature gaining only one single municipal councilor. The party self-disbanded in March, 2010.