Despite calls for open science reforms in special education research, little is known about the perceptions or practices of special education researchers regarding open science. In this study, we modified the Open Science Survey (OSS) to examine the knowledge, attitudes, perceived norms, and behaviors of 155 special education researchers for three open science practices (posting preprints, sharing data, and preregistering studies). Researchers reported favorable attitudes toward each of the three practices, but low levels of implementation knowledge. Additionally, multiple linear regression revealed knowledge, attitudes, perceived norms, career stage, and methodological preference significantly predicted intent to engage in these open science practices. We provide recommendations for using findings to inform efforts to increase open science uptake in the field.