Vocabulary knowledge is strongly associated with reading achievement and becomes increasingly predictive of overall reading proficiency as children progress through the elementary grades. Children who are d/Deaf and hard of hearing often begin schooling with small meaning vocabularies, a disadvantage that puts them at risk of struggling to learn to read. Recent research on vocabulary intervention with young children who have typical hearing demonstrates the effectiveness of targeted, contextualized instruction on children's word learning and provides insights for early childhood educators of young d/Deaf and hard of hearing children. In the present essay, which is grounded in the qualitative similarity hypothesis (Paul, 2010, in press; Paul & Lee, 2010) and sociocultural theories of learning, the author argues for evidence-based vocabulary interventions for young d/Deaf and hard of hearing children that are rooted in the contemporary research literature.