Argo Meresaar (born 13 January 1980 in Pärnu) is a former Estonian volleyball player who is currently the assistant coach of Bigbank Tartu.

Meresaar started his career in hometown club ESS Falck Pärnu.

During his career, Meresaar has also played in Estonian teams Pere Leib Tartu and Selver Tallinn.

To date he is one of the most experienced players for the national team with 175 games to his name.

Meresaar has been voted Estonian Volleyball Player of the Year five times (2000–2003 and 2009).