Mary Wiseman is an American actress. She is best known for starring as Sylvia Tilly in the Paramount+ science fiction drama series Star Trek: Discovery (2017–present).

Star Trek: Discovery is an American science fiction television series created by Bryan Fuller and Alex Kurtzman for the streaming service CBS All Access. It is the seventh Star Trek series and debuted in 2017. The series follows the crew of the starship Discovery beginning a decade before Star Trek: The Original Series in the 23rd century. At the end of the second season, they travel to the 32nd century which is the setting for subsequent seasons.