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

The women's javelin throw at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 10 and 11 July.

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

Qualification
Qualification: Standard 54.00 m (Q) or at least best 12 qualified (q)

Participation
According to an unofficial count, 34 athletes from 24 countries participated in the event. • 🇦🇺 australia (2)

• 🇧🇷 brazil (1)

• 🇨🇦 canada (1)

• 🇨🇳 china (1)

• undefined (1)

• 🇨🇺 cuba (2)

• 🇫🇷 france (2)

• 🇩🇪 germany (2)

• 🇯🇵 japan (2)

• undefined (1)

• 🇱🇹 lithuania (1)

• 🇱🇺 luxembourg (1)

• 🇲🇩 moldova (1)

• 🇳🇴 norway (2)

• 🇵🇱 poland (1)

• undefined (1)

• 🇷🇸 serbia (1)

• undefined (2)

• 🇰🇷 south korea (1)

• 🇪🇸 spain (1)

• 🇸🇪 sweden (1)

• undefined (2)

• 🇺🇦 ukraine (2)

• 🇺🇸 united states (2)