N. exigua

N. exigua may refer to:


 * Nassula exigua, a ciliate protist
 * Nectriella exigua, a sac fungus
 * Neopetrosia exigua, a marine sponge
 * Nicotiana exigua, a tobacco plant
 * Nucula exigua, a nut clam
 * Nymphoides exigua, an aquatic plant