A Zantedeschia cultivar, designated 14091, is disclosed. The invention relates to the seeds of Zantedeschia cultivar 14091, to the plants of Zantedeschia cultivar 14091 and to methods for producing a Zantedeschia plant produced by crossing the cultivar 14091 with itself or another Zantedeschia variety. The invention further relates to hybrid Zantedeschia seeds and plants produced by crossing the cultivar 14091 with another Zantedeschia cultivar.