Jay Michael Blankenau (born 27 September 1989) is a Canadian professional volleyball player.

A member of the Canada national team, and a participant at the Olympic Games (Rio 2016, Tokyo 2020).

In 2015, he signed a contract with Dutch club Abiant Lycurgus, helping them win the championship.

For the 2016/17 season, he joined SWD Powervolleys Düren in Germany.

He was a member of the Canadian national team that finished 5th at the 2016 Summer Olympics.