ADNP is a multifunctional protein involved in chromatin remodeling, transcription, and microtubule interaction, playing a critical role in brain development, with mutations linked to ADNP-Related Disorder. Here we have characterized seven ADNP commercial antibodies for western blot, immunoprecipitation, and immunofluorescence using a standardized experimental protocol based on comparing read-outs in knockout cell lines and isogenic parental controls. These studies are part of a larger, collaborative initiative seeking to address antibody reproducibility issues by characterizing commercially available antibodies for human proteins and publishing the results openly as a resource for the scientific community. While use of antibodies and protocols vary between laboratories, we encourage readers to use this report as a guide to select the most appropriate antibodies for their specific needs.