The cDNA coding for the chicken growth hormone was cloned and sequenced. The 795 base pairs long cDNA insert contains a 5'-untranslated region (35 b.p.), a sequence coding for precursor of growth hormone (648 b.p.), a 3'-untranslated region (96 b.p.) and a poly(A)-tail (16 b.p.). Comparison of the cDNA sequence cloned by us with that published earlier revealed several differences including the additional unique HinfI site at the position corresponding to codons for Leu-87 and Thr-88.