Justina was the pre-Justine feminization of Justin, now a possible alternative to Christina. Oddly, while Justine feels like a name unto itself, Justina feels like a pinned-together feminization in the mold of Richarda or Benjamina.
Saint Justina of Padua, Italian virgin-martyr who converted SaintCyprian Saint Justina of Cagliari, Sardinian martyred with her sisters Justa and Henedina
Justina, wife of Roman Emperor Valentinian I
Justina Kristina Casagli, Swedish opera singer
Justina Machado, American actress
Justina Robson, English novelist
Justina VailEvans, American actress