Melinda Wrenn Schmidt is an American actress. She is best known for her starring role as NASA engineer, flight director, and later director of NASA Margo Madison in the Apple TV+ original science-fiction space drama series For All Mankind. Her other television roles include Julia Sagorsky in the period drama series Boardwalk Empire (2012–2013), KGB handler Kate in the spy drama series The Americans (2014), Dr Iris Campbell on the thriller series Person of Interest (2014–2016), and Megan Holter in the horror series Outcast (2016–2018). Her film roles include the horror film Preservation (2014), the biographical drama I Saw the Light (2015), the war film 13 Hours: The Secret Soldiers of Benghazi (2016), the romantic comedy, The Good Catholic (2017), and the science-fiction horror film Nope (2022).

For All Mankind is an American science fiction drama television series created by Ronald D. Moore, Matt Wolpert, and Ben Nedivi and produced for Apple TV+. The series dramatizes an alternate history depicting "what would have happened if the global space race had never ended" after the Soviet Union succeeds in the first crewed Moon landing ahead of the United States. The title is inspired by the lunar plaque left on the Moon by the crew of Apollo 11, which reads, in part, "We Came in Peace for All Mankind".