The language used to refer to autism has been a topic of ongoing debate. Research in English-speaking countries indicated an overall preference for identity-first language ('autistic person') among autistic adults rather than person-first language ('person with autism'). We examined terminology preference in Dutch autistic adults (n = 1026; 16-84 years; 57% women) and parents of autistic children (n = 286) via an online survey. A majority of self-reporting adults with autism (68.3%) and parents (82.5%) demonstrated a person-first language preference. A younger age, higher IQ and more autistic traits predicted a relatively stronger identity-first language preference in autistic adults. We conclude that language and culture may impact terminology preference of adults with autism and parents. For now, we advocate to use a mix of person-first language and identity-first language in academic papers to cover the full range of preferences.