Alyssa Elaine Miller (born July 4, 1989) is an American fashion model. She has done print and runway work for numerous leading companies. Among her highlights are cover appearances on for Vogue (Germany) and Elle (Italy), work as a featured model/spokesperson for both Guess and Victoria’s Secret as well as appearances in the Sports Illustrated Swimsuit Issue.

In 2003, her father sent test photos to a Los Angeles office of IMG Models. By 2005 she was an up-and-coming model with the Marilyn NY agency. She did a 2005 fall campaign for Stella McCartney.By February 2006, she had been featured in each of the major editions of Vogue, including the cover of a Vogue Italia supplement.Following cover appearances for the October 2006 German Vogue and the July 2010 Italian Elle (she also later appeared on the October 2012 cover), she became one of the new faces of Guess clothing in late 2010. Miller has also done work for Victoria’s Secret. Other ad work has included Bebe, Billabong, Chopard, Diesel, Elie Tahari, Intimissimi, Juicy Couture, La Perla and Laura Biagiotti.
She signed with Elite Model Management in 2011. She made her Sports Illustrated Swimsuit Issue debut in 2011 when she was one of five rookies (along with Shannan Click, Kenza Fourati, Izabel Goulart, and fellow Guess model Kate Upton) in the issue. According to a story in The Wall Street Journal she had previously thought that if she ever appeared in Sports Illustrated it would be for soccer, since given her athletic background she had envisioned herself as a professional soccer player. She also appeared in the body painting feature in the 2011 Swimsuit Issue where Joanne Gair painted her and Stewart Shining photographed her in New York City. 2013 was her third Swimsuit Issue. In both 2011 and 2013, Miller participated in the annual Sports Illustrated swimsuit edition of David Letterman’s Top 10 on the Late Show with David Letterman on the night that the Swimsuit Issue cover model was announced.