Hidilyn Francisco Diaz-Naranjo[3][4] (Tagalog: [haɪdiˈlin ˈdias naˈɾanho];[5] born February 20, 1991)[6] is a Filipino weightlifter and airwoman.

While she was a student and representing Universidad de Zamboanga, she won two golds and one silver in the Asian Youth/Junior Weightlifting Championship held in Jeonju, South Korea.

[17] After her success in the 2016 Olympics, Diaz decided to continue her tertiary education and intended to pursue a degree related to sports in Manila.

[19] In January 2017, Diaz received a scholarship to study business management at De La Salle-College of Saint Benilde.

[24] In October 2024, Diaz enrolled in a short course, the Athlete Career Transition Sports Ethics and Integrity at KU Leuven in partnership with the International Olympic Committee Solidarity in Belgium.

[25] First learning weightlifting from her older cousins, Diaz initially lifted using makeshift barbells made of mag wheels or concrete.

Elementary students not enrolled in UZ were able to train under the program of Institute of Human Kinetics director Elbert Atilano.

[27] Competing in the women's 58-kg class, 17-year-old Diaz lifted 85-kg in the snatch and 107-kg in the clean and jerk for a 192-kg total, breaking the Philippine record that she herself set at the 2007 Southeast Asian Games.

Philippine Sports Commission Chairman William Ramirez once commented that she competed there to gain valuable experience and predicted that she would be a strong contender in future competitions.

[14] She also earned three bronze medals for the clean, jerk and snatch events in the 53 kg division of the IWF World Weightlifting Championship held in Houston, Texas, on November 22, 2015, to claim a spot in the 2016 Rio Olympics.

[44] Two months prior to the Asian Games, she recruited Gao Kaowen who was previously coach of the Chinese national women's army team.

[14] In January 2020, Diaz won the gold medal in the women's 55 kg event at the Roma 2020 World Cup in Rome, Italy.

[13][51] Diaz's achievements at the 2020 Summer Olympics were impressive, as she was previously stranded in Malaysia from February 2020 until July 2021, due to travel restrictions imposed by governments to contain the COVID-19 pandemic.

However, once Malaysia implemented its Movement Control Order in April 2020, which closed gyms within the capital region of Kuala Lumpur (Klang Valley), she improvised by using bamboo sticks and large water bottles as makeshift weightlifting equipment.

[52][53] In October 2020, she relocated to the southern coastal state of Malacca where they had been living in a house owned by a Malaysian weightlifting official in Jasin.

[54][55] The Malaysian government then implemented periodic restrictions on gyms and sporting activities within 2021 (to reduce social interaction and contain the spread of the coronavirus), forcing her to work out in the house's sweltering open-air carport in the immediate months prior to the 2020 Summer Olympics.

[55][56][57][58][59] Diaz also struggled with her mental health during this ordeal, especially with the postponement of the 2020 Olympics, and credited her team, including sports psychologist Dr. Karen Katrina Trinidad and Project: Steady with trauma therapist Gang Badoy Capati for her well-being.

[21][60] In recognition of winning the first gold medal for the Philippines at any Olympic Games, she was awarded PHP 35.5 million (approximately US$660,000) along with a house and a lot.

[63] In December of that year, she won the gold medal in the women's 55 kg event at the World Weightlifting Championships held in Bogotá, Colombia.

Diaz was also a recipient of a Military Merit Medal for organizing PAF events and a Presidential Citation Unit Badge.

[85] In April 2019, Diaz was listed among those allegedly involved in an ouster plot against president Rodrigo Duterte,[86] as presented by Salvador Panelo who was Presidential Spokesperson at the time.

[91] Diaz's life leading to her silver medal win in the 2016 Summer Olympics was depicted in an episode of Maalaala Mo Kaya, a drama anthology series, aired on September 24, 2016.