Andrea Horwath, Canadian politician
Andrea Horwath ( (listen); born October 24, 1962) is a Canadian politician who currently serves as the leader of the Official Opposition in Ontario since 2018 and leader of the Ontario New Democratic Party (NDP) since 2009. She is the member of Provincial Parliament (MPP) for Hamilton Centre since 2004.

She is the first woman to lead the Ontario New Democratic Party, and one of only three women to serve as leader of a political party with representation in the Ontario provincial legislature (former Ontario Liberal Party leaders Kathleen Wynne and Lyn McLeod are the other two), being elected as leader at the 2009 Ontario NDP leadership convention.

At the 2018 provincial election, Horwath led the Ontario NDP to official opposition status after 23 years without government or opposition status.