A novel cotton variety, designated as FM 9180B2F, is disclosed. The invention relates to seeds, plants, plant cells, plant tissue, harvested products and cotton lint as well as to hybrid cotton plants and seeds obtained by repeatedly crossing plants of variety FM 9180B2F with other plants. The invention also relates to plants and varieties produced by the method of essential derivation from plants of FM 9180B2F and to plants of FM 9180B2F reproduced by vegetative methods, including but not limited to tissue culture of regenerable cells or tissue from FM 9180B2F.