Marquess na Farko Cornwallis wani lakabi ne na girma wanda aka baiwa Charles Cornwallis, wani jami'in sojan Birtaniya kuma mai kula da mulkin mallaka wanda ya yi aiki a matsayin Gwamna-Janar na Indiya kuma daga baya a matsayin Lord Lieutenant na Ireland. Lakabin "Marquess" wani matsayi ne na daukaka a cikin 'yan Burtaniya, wanda ya fi na kunne amma kasa da duke, kuma "Na Farko" yana nuna cewa Cornwallis shine mutum na farko da ya rike mukamin Marquess Cornwallis.