In a World... is a 2013 American comedy film written, directed and co-produced by Lake Bell. The film stars Bell as a vocal coach who does film trailers. The film co-stars Demetri Martin, Fred Melamed, Rob Corddry, Michaela Watkins, Ken Marino, Nick Offerman, and Tig Notaro. The film is known for successfully crossing genres that make it more than an ordinary romantic comedy.

Lake Siegel Bell is an American actress, screenwriter, and director. She has appeared in various television series, including Boston Legal (2004–2006), Surface (2005–2006), How to Make It in America (2010–2011), Childrens Hospital (2008–2016), and Bless This Mess (2019–2020) and in films including Over Her Dead Body (2008), What Happens in Vegas (2008), It's Complicated (2009), No Strings Attached (2011), Million Dollar Arm (2014), No Escape (2015), Man Up (2015), The Secret Life of Pets (2016), Shot Caller (2017), Home Again (2017), The Secret Life of Pets 2 (2019), and Black Panther: Wakanda Forever (2022).