Krysten Alyce Ritter is an American actress and model. She came to prominence starring as Jane Margolis in the AMC drama series Breaking Bad (2009–2010), a role she reprised in the spinoff film El Camino (2019). She gained further recognition for her lead roles in the ABC sitcom Don’t Trust the B—- in Apartment 23 (2012–2013) and as the title character in the Netflix superhero series Jessica Jones (2015–2019) and the Netflix miniseries The Defenders (2017).

In film, Ritter appeared in the romantic comedies 27 Dresses (2007), What Happens in Vegas (2008), Confessions of a Shopaholic (2009), and She’s Out of My League (2010). She wrote, co-produced, and starred in the comedy Life Happens (2011), which was followed by roles in the horror comedy Vamps (2012), the comedy-drama Listen Up Philip (2014), the biographical drama Big Eyes (2014), the comedy-drama The Hero (2017), and the dark fantasy Nightbooks (2021).

Ritter also had roles in the UPN noir mystery series Veronica Mars (2005–2006) and its 2014 film continuation, the CW comedy-drama series Gilmore Girls (2006–2007), and the HBO limited series Love & Death (2023).