Mary Flor Diaz (born 4 May 1999)[1] is a Filipino weightlifter competing in the women's 45 kg category.

Mary Flor Diaz was born on 4 May 1999 in Zamboanga City.

At a young age she was introduced to weightlifting through her family, competing in many local and national tournaments such as the Batang Pinoy, where she won in the 2011,[2] 2012,[3] 2014,[4] and 2016 edition.

She lifted 70 kg in the snatch and clean and jerked 89 kilograms.

[11] After a one-year absence she competed in the 2020 Asian Weightlifting Championships, where she went down a weightclass.

She failed all snatch attempts and lifted 80 kg for the clean and jerk.