Erik Gustaf Wersäll (14 January 1887 – 24 March 1973) was a Swedish modern pentathlete.

He competed at the 1912 Summer Olympics and finished in ninth place.

[1][2] Wersäll was born to the Swedish Finance Minister Claës Wersäll and Charlotta Wersäll, in a family of 10 siblings.

Two of his eight brothers, Claës-Axel and Ture also competed at Summer Olympics.

[3] This biographical article related to modern pentathlon in Sweden is a stub.