Harriette L. Chandler is an American politician who was the 94th President of the Massachusetts Senate and the Massachusetts State Senator for the 1st Worcester district, which includes parts of the city of Worcester, where she resides, and the towns of Boylston, Holden, Princeton, and West Boylston, and parts of Clinton and Northborough. She is a Democrat who has served since January 2001. From 1995 to 2001 she was a member of the Massachusetts House of Representatives. Prior to serving in the Massachusetts legislature, she was a member of the Worcester school committee from 1991 to 1994. She is the first woman from Worcester ever to be elected to the Massachusetts Senate.

The president of the Massachusetts Senate is the presiding officer. Unlike the United States Congress, in which the vice president of the United States is the ex officio president of the United States Senate, in Massachusetts, the president of the Senate is elected from and by the senators. The president, therefore, typically comes from the majority party, and the president is then the de facto leader of that party.