Hamilton East is a former provincial electoral district in Ontario, Canada.
The riding had previously elected Ontario's first ever provincial Labour MLA Allan Studholme in a 1906 by-election.
Studholme remained in office until his death in 1919 when he was succeeded in by another Labour MLA, George Grant Halcrow (1919–1923).
It was last represented provincially by Andrea Horwath of the Ontario New Democratic Party.
In the 2007 election, Horwath was reelected in the successor riding of Hamilton Centre.