Sporting an ivory blazer, blue jeans and a black top, Meghan also wore dark sunglasses and a hat.
She was joined by university pals Lindsey Roth and Genevieve Hills, sparking rumours the two women will be attending the christening of Archie Harrison on Saturday July 6.
Meghan's appearance at Wimbledon comes a day after it was revealed that the Duke and Duchess of Sussex would not be revealing the names of their son's godparents.
Buckingham Palace said in a statement: "Archie Harrison Mountbatten-Windsor will be christened in a small private ceremony by the Archbishop of Canterbury in the Private Chapel at Windsor Castle on Saturday 6th July.
"The Duke and Duchess of Sussex look forward to sharing some images taken on the day by photographer Chris Allerton.
"The godparents, in keeping with their wishes, will remain private."