We extend previous research by systematically investigating whether perceptions of scientific authorship vary between domains. Employing regulations for authorship of scientific journals as well as the Scientists Survey 2016 conducted by the German Centre for Higher Education Research and Science Studies (DZHW), we provide a comprehensive picture of perceptions of scientific authorship across domains from the perspective of the supply side (journals) as well as the demand side (researchers). We find considerable differences in the perception of authorship across disciplines on both sides. Hence, not only domain-specific “formal norms,” but also domain-specific statements about ideals can be observed with regard to scientific authorship. The results have important implications: in order to avoid that researchers in disciplines with much narrower definitions of authorship are disadvantaged when compared to their colleagues from disciplines that rely on broader authorship definitions, domain-specific perceptions of authorship should be taken into account when allocating funding and jobs.