Stenotrophomonas goyi sp. nov. has been isolated from a contaminated algal culture (Chlamydomonas reinhardtii). Its genome has been fully sequenced (4,487,389 base pairs) and a tentative annotation is provided (4,147 genes). The genome information suggests that S. goyi sp. nov. is unable to use sulfate and nitrate as sulfur and nitrogen sources, respectively. Growth tests have confirmed the dependence of the sulfur-containing amino acids methionine and cysteine. The potential biotechnological interest of this bacteria is discussed here and in a related research paper (Fakhimi et al., 2023b).