Alexa Kaien Irvin (born July 21, 1992) is a Canadian sprint kayaker. She is the current Pan American Games champion in the women's K-4 500 metres, she won gold together with Andréanne Langlois, Alanna Bray-Lougheed, and Anna Negulic at the 2019 Pan American Games. Irvin also won gold in the K-4 500 metres at the 2011 Pan American Games.