Arthrobacter koreensis 5J12A is a desiccation-tolerant organism isolated from the Nerium oleander rhizosphere. Here, we report its genome sequence, which may shed light on its role in plant growth promotion. This is believed to be the first published genome of a desiccation-tolerant plant growth promoter from the genus Arthrobacter. FOOTNOTES Address correspondence to Maximino Manzanera, manzanera{at}ugr.es. ↵* Present address: Juan Jesús Narváez-Reinaldo, Semillas Fitó, Barcelona, Spain. Citation Manzanera M, Narváez-Reinaldo JJ, García-Fontana C, Vílchez JI, González-López J. 2015. Genome sequence of Arthrobacter koreensis 5J12A, a plant growth-promoting and desiccation-tolerant strain. Genome Announc 3(3):e00648-15. doi:10.1128/genomeA.00648-15. Received 14 May 2015. Accepted 18 May 2015. Published 11 June 2015.