金马蹄地区（英语：Golden Horseshoe）位于加拿大安大略省南部，是该省的主要都市带。金马蹄地区座落安大略湖西端，以大多伦多地区为中心，广义覆盖范围从伊利湖起向北伸延至格鲁吉亚湾，大部分地区也在魁北克城－温莎市走廊之上以及五大湖区城市群之内。金马蹄地区约有876万名居民，占加拿大全国人口约25.6%和安省人口约75%，是北美的主要都市带之一。

金马蹄地区的心脏地带从尼亚加拉半岛东端的尼亚加拉瀑布城起，往西伸延至安大略湖西端的咸美顿，再向东北经多伦多伸延至奥沙华为止。广义覆盖范围则从安大略湖湖岸起向各方伸延，西南至布兰特福德，西至基秦拿－滑铁卢地区，北至巴里市，东北至彼得堡。整个地区的面积约有33,500平方公里（13,000平方英里），当中有7,300平方公里（2,800平方英里）为法定绿色地带。

The Golden Horseshoe is a secondary region of Southern Ontario, Canada, which lies at the western end of Lake Ontario with outer boundaries stretching south to Lake Erie and north to Georgian Bay. The region is densely populated and industrialized. Most of it is also part of the Greater Toronto and Hamilton Area, Quebec City–Windsor Corridor and the Great Lakes Megalopolis. With a population of 8.76 million people in 2011, the Golden Horseshoe makes up over 26% of the population of Canada and contains more than 68% of Ontario's population, making it one of the largest population concentrations in North America. Although it is a geographically named secondary region of Southern Ontario, the Greater Golden Horseshoe is also used today to describe a broader region that stretches from the area of the Trent–Severn Waterway to at least the Grand River area, including centres outside of the core region.