Henny is a pet form with two sources: in Dutch and German it is a short form of Henrietta or Hendrika, the feminine of Henry, and so means "home ruler", while in Yiddish-speaking communities it is a diminutive usually traced to Hene, a form of Hannah, "grace". In the United States today most girls named Henny are born into Orthodox Jewish families. The name ranked number 6601 in 2000 and reached its best position so far, number 2626, in 2025 with 66 girls.