Elisabeth Singleton Moss (born July 24, 1982) is an American actor, producer, and director. She is known for her work in several television dramas, earning such accolades as two Primetime Emmy Awards and two Golden Globe Awards, which led Vulture to name her the "Queen of Peak TV".

Moss began acting in the early 1990s and first gained recognition for playing Zoey Bartlet, the youngest daughter of President Josiah Bartlet, in the NBC political drama series The West Wing (1999–2006). She earned wider recognition for playing Peggy Olson, a secretary-turned-copywriter, in the AMC period drama series Mad Men (2007–2015), and subsequently won the Critics' Choice Television Award for Best Actress in a Movie/Miniseries and the Golden Globe Award for Best Actress – Miniseries or Television Film for portraying Detective Robin Griffin in the BBC miniseries Top of the Lake (2013). For producing and starring as June Osborne in the Hulu dystopian drama series The Handmaid's Tale (2017–present), Moss won the Primetime Emmy Award for Outstanding Lead Actress in a Drama Series and Outstanding Drama Series, among other accolades.

Moss has also attracted acclaim for her film performances, notably supporting roles in Girl, Interrupted (1999), Get Him to the Greek (2010), and Us (2019) and starring roles in The One I Love (2014), The Square (2017), The Invisible Man (2020) and Shirley (2020). She has also starred in three films by Alex Ross Perry, including Her Smell (2018). On stage, she has performed in the Broadway productions of David Mamet's Speed the Plow and Wendy Wasserstein's The Heidi Chronicles. For the latter, she received a nomination for the Tony Award for Best Actress in a Play. She also appeared in the West End production of Lillian Hellman's The Children's Hour.