Marek Kaljumäe (born 18 February 1991) is a Estonian former footballer, who played as a midfielder.

Kaljumäe came through the SC Real youth system, where he was coached by Aivar Tiidus.

On 5 March 2015, Kaljumäe joined Meistriliiga club Narva Trans on a one-year deal.

[5] On 18 January 2017, Kaljumäe signed one-year contract with Finnish Veikkausliiga club PS Kemi.

Kaljumäe made his senior international debut for Estonia on 19 November 2017, in a 2–0 away victory over Fiji in a friendly.