In this edited volume, language weaponization -- or the weaponization of language -- is used to describe the process in which words, discourse, and language in any form can be used to inflict harm on others. The term harm is of vital importance because it refers to how specific groups of people are affected by ideologies and practices that normalize inequity and injustice in their environments. The contributions in this book explore how language ideologies, practices, and policies can physically, emotionally, socially, and/or economically disadvantage or harm minoritized individuals, as well as their cultures and languages.