Walnut Hall was a row of four Georgian-style terraced homes in Toronto, Ontario, Canada. Constructed in 1856, it was recognized by both the Government of Canada and the City of Toronto as being of historic significance, but portions of it collapsed and it had to be demolished in 2007 due to neglect. At the time of its demolition, it was Toronto's last remaining complete row of 19th century Georgian townhomes.

A terrace, terraced house (UK), or townhouse (US) is a kind of medium-density housing that first started in 16th century Europe with a row of joined houses sharing side walls. In the United States and Canada these are sometimes known as row houses or row homes.