Jakob Kjersem (2 August 1925 – 11 June 2009) was a Norwegian long-distance runner.

At the 1948 Summer Olympics he finished twelfth in the 10,000 metres final, and at the 1952 Summer Olympics he placed 24th in the marathon.

His rivals were Martin Stokken and Øistein Saksvik.

[7][8][9] He was a journalist and farmer by occupation,[10] and published books on local sport history.

This biographical article relating to Norwegian athletics is a stub.