Kristjan Rosenberg (born 16 May 1994) is an Estonian decathlete.

His personal best score is 8298 points, achieved in June 2021 in Tallinn at Estonian national championships.

[1] He ranked 13th in the world that year although not making to the 2020 Summer Olympics in Tokyo.

He also won Estonian nationals in 2016 in Rakvere with 7738 points.

This biographical article relating to Estonian athletics is a stub.