Kathryn Hahn (born July 23, 1973) is an American actress and comedian. She began her career on television, playing Lily Lebowski in the NBC crime drama series Crossing Jordan (2001–07). Hahn went on to appear as a supporting actress in a number of major comedy films, including roles in the films How to Lose a Guy in 10 Days (2003), Anchorman: The Legend of Ron Burgundy (2004), Step Brothers (2008), Our Idiot Brother (2011), We're the Millers (2013), and The Secret Life of Walter Mitty (2013).
As a lead actress, Hahn starred in the 2013 comedy-drama film Afternoon Delight, directed by Jill Soloway, and 2018's Private Life, directed by Tamara Jenkins, receiving critical acclaim. She had a starring role in the comedy film Bad Moms (2016), and its sequel, A Bad Moms Christmas (2017). She has also appeared in a number of dramatic films, including Revolutionary Road (2008), This Is Where I Leave You (2014), Tomorrowland (2015), The Visit (2015), and Captain Fantastic (2016). In 2017 she received a nomination for a Primetime Emmy Award for Outstanding Supporting Actress in a Comedy Series for her work in Transparent (2014–19).