2012 World Junior Championships in Athletics – Women's hammer throw

The women's hammer throw at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 12 and 14 July.

Records
, the existing world junior and championship records were as follows.

Qualification
Qual. rule: qualification standard 62.00 m (Q) or at least best 12 qualified (q)

Participation
According to an unofficial count, 39 athletes from 27 countries participated in the event. • 🇦🇷 argentina (1)

• 🇦🇺 australia (2)

• 🇧🇾 belarus (2)

• 🇨🇳 china (1)

• undefined (1)

• 🇨🇾 cyprus (1)

• 🇫🇮 finland (2)

• 🇫🇷 france (2)

• undefined (2)

• 🇭🇺 hungary (2)

• 🇲🇽 mexico (1)

• undefined (1)

• 🇳🇿 new zealand (1)

• undefined (1)

• 🇵🇱 poland (2)

• 🇷🇴 romania (2)

• 🇷🇺 russia (2)

• 🇷🇸 serbia (1)

• 🇸🇰 slovakia (1)

• undefined (1)

• 🇪🇸 spain (1)

• 🇸🇪 sweden (2)

• 🇹🇷 turkey (1)

• 🇺🇦 ukraine (2)

• undefined (1)

• 🇺🇸 united states (2)

• 🇻🇪 venezuela (1)