Melalui pernikahannya, Meghan adalah anggota keluarga kerajaan [[Britania Raya]] dan selanjutnya akan diberi gaya [[Yang Mulia Kerajaan]]. Selanjutnya ia akan dipanggil "Yang Mulia Istri Adipati Sussex" ([[Bahasa Inggris]] : ''Her Royal Highness The Duchess of Sussex''.)<ref>{{cite web|url=https://www.royal.uk/prince-harry-and-ms-meghan-markle-announcement-titles|title=Prince Harry and Ms. Meghan Markle: Announcement of Titles|publisher=The Royal Family|date=19 May 2018|accessdate=19 May 2018}}</ref> Ia juga bergelar [[Countess Dumbarton]] dan [[Baroness Kilkeel]].<ref>{{cite web|url=https://www.belfasttelegraph.co.uk/news/northern-ireland/royal-wedding-harry-and-meghan-appointed-baron-and-baroness-of-kilkeel-36923521.html|title=Royal wedding: Harry and Meghan appointed Baron and Baroness of Kilkeel|publisher=Belfast Telegraph|date=19 May 2018|accessdate=19 May 2018}}</ref>
