A novel pea cultivar designated FP2311 is disclosed. The invention relates to the seeds of pea cultivar FP2311, to the plants of pea cultivar FP2311, and parts thereof, for example pollen, ovule, berry or pod. The invention also relates to methods for producing a pea plant by crossing the cultivar FP2311 with itself or another pea line. The invention further relates to methods for producing a pea 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 pea lines derived from the pea cultivar FP2311.