Helena Antonette "Lenie" Gerrietsen (28 March 1930 – 22 June 2024) was a Dutch gymnast who competed at the 1948 Summer Olympics in London and the 1952 Summer Olympics in Helsinki.

In 1948, Gerrietsen placed fifth in the team all-around competition.

In 1952, she competed in all artistic gymnastics events with her best result being 6th place in the team portable apparatus.

[1] Gerrietsen died on 22 June 2024, at the age of 94.

[2] This biographical article related to Dutch artistic gymnastics is a stub.