What is "macisaac"

MacIsaac is a surname. Notable people with the surname include:

• Angus MacIsaac (born 1943), English educator and businessman
• Angus MacIsaac (footballer) (1900-1944) Australian rules footballer
• Ashley MacIsaac (born 1975), Canadian fiddler
• Dave MacIsaac (born 1955), Canadian musician
• Martha MacIsaac (born 1984), Canadian actress
• Rob MacIsaac (born 1962), Canadian politician