Félix Fructuoso Sienra Castellanos (21 January 1916 – 30 January 2023) was a Uruguayan sailor who competed in the 1948 Summer Olympics finishing sixth.
In the 1948 Olympic Games, he sailed in the Firefly class and placed sixth out of 21 participants.
[2][3] On January 17 2023, he became the oldest known Olympian to have ever lived, overtaking Walter Walsh, who had died just short of his 107th birthday in 2014.
Sienra died about two weeks later on, aged 107 and 9 days.
This biographical article related to sailing in Uruguay is a stub.