Complete genome sequence of <i>Stutzerimonas balearica</i> JWOYS.421, a denitrifying strain isolated from the Hong Kong oyster (<i>Magallana hongkongensis</i>)

<i>Stutzerimonas balearica</i> strain JWOYS.421 was recovered from the shell of a Hong Kong oyster (<i>Magallana hongkongensis</i>) collected from coastal waters in Hong Kong. Its complete genome, a single circular chromosome of 4,405,581 bp (64.80% G+C), was established through hybrid assembly.