Cronobacter is a ubiquitous Gram-negative bacterium linked with serious infections. In this report, we describe the characterization of Cronobacter phage Dev_CS701, which was isolated from wastewater. Related to phages belonging to the Straboviridae family and Pseudotevenvirus genus, such as vB_CsaM_IeB, Dev_CS701 contains 257 predicted protein-coding genes and a tRNA gene.