Description and specification of a new and distinct nectarine tree cultivar named ‘Bowden’ which originated from a hand-pollinated cross of Ark. 699N×Ark. 663CN made in 2001. This new nectarine cultivar can be distinguished by its very firm, non-melting white flesh, early-mid season ripening, medium-sized fruits, excellent fruit quality with distinct white nectarine flavor, and resistance to bacterial spot disease.