Donald MacKinnon

• Donald MacKinnon (Celtic scholar), Scottish Celtic scholar
• Donald Alexander MacKinnon, Canadian politician and author
• Donald M. MacKinnon, Scottish philosopher and theologian
• Donald Mackinnon, Australian politician
• Donald James Mackinnon, his grandson, Australian politician
• Donald W. MacKinnon, American psychologist
• Donald MacKinnon (cricketer), Scottish cricketer
• Donald Mackinnon (diplomat), Australian public servant and diplomat