Maria Elena Bello (born April 18, 1967) is an American actress and writer. She has appeared in the films Permanent Midnight (1998), Payback (1999), Coyote Ugly (2000), The Cooler (2003), A History of Violence (2005), Thank You for Smoking (2006), The Jane Austen Book Club (2007) The Mummy: Tomb of the Dragon Emperor (2008), Prisoners (2013), and Lights Out (2016). Bello is known for her role as Dr. Anna Del Amico on the NBC medical drama ER (1997–1998). She starred as Lucy Robbins on the Fox series Touch alongside Kiefer Sutherland in 2013 and currently stars as Michelle McBride on the Amazon original series Goliath. In 2017, Bello joined the CBS procedural NCIS as Special Agent Jacqueline 'Jack' Sloane, a series regular.
Bello was born in Norristown, Pennsylvania, to Kathy, a school nurse and teacher, and Joe Bello, a contractor. Her father is Italian American, with roots in Montella, Italy, and her mother is Polish American. She grew up in a working-class Roman Catholic family and graduated from Archbishop John Carroll High School in Radnor, Pennsylvania. She majored in political science at Villanova University. Following graduation, Bello honed her acting skills in a number of New York theater productions.