Alexa Scimeca Knierim (née: Alexa Paige Scimeca; born June 10, 1991) is an American pair skater. With her skating partner, Brandon Frazier, she is the 2021 U.S. National Champion and the 2020 Skate America Champion. With her husband and former skating partner, Chris Knierim, she is a 2018 Olympic bronze medalist in the figure skating team event, a two-time Four Continents medalist (2016 silver, 2014 bronze), a three-time Grand Prix medalist, and a three-time U.S. National Champion (2015, 2018, 2020). At the 2018 Winter Olympics, the Knierims became the first American pair, and the second pair ever in history, to perform a quad twist at the Olympic Games.