The aim of this study is to compare the different levels of trust that parliamentary elites in Latin America place in their parliaments, as well as to assess how they have changed over the last 25 years. This period has been characterized by a great diversity of political and economic contexts in the region. Using data provided by the PELA-USAL Project, we analyze the attitudes and opinions of parliamentarians in 16 Latin American countries between 1998 and 2022. The results show a heterogeneous trust in parliaments, as well as variations in the levels of trust according to the different political cycles experienced by the region.