Johann Bayer
"α Cygni" (Latinised to "Alpha Cygni") is the star's designation given by Johann Bayer in 1603. The traditional name "Deneb" is derived from the Arabic word for "tail", from the phrase ذنب الدجاجة "Dhanab al-Dajājah", or "tail of the hen". The IAU Working Group on Star Names has recognised the name "Deneb" for this star, and it is entered in their Catalog of Star Names.