Sonia Rosa Chang-Díaz is an American politician who served in the Massachusetts Senate from the 2nd Suffolk district as a member of the Democratic Party. She was the first Hispanic woman elected to the state senate. She ran for the Democratic nomination for Governor of Massachusetts in the 2022 election.

Massachusetts Senate's 2nd Suffolk district in the United States is one of 40 legislative districts of the Massachusetts Senate. It covers portions of Suffolk county. Democrat Liz Miranda of Roxbury has represented the district since 2023.