A hybrid cucumber designated Menfis is disclosed having resistance to powdery mildew (Sphaerotheca fuliginea), cucumber mosaic virus, and cucumber vein yellowing virus. The invention relates to the seeds of hybrid cucumber Menfis, to the plants of hybrid cucumber Menfis, and to methods for producing a cucumber plant, either inbred or hybrid, by crossing the hybrid Menfis with itself or another cucumber plant. The invention further relates to methods for producing a cucumber plant containing in its genetic material one or more transgenes and to the transgenic plants produced by that method and to methods for producing other cucumber lines, cultivars, or hybrids derived from the hybrid cucumber Menfis.