Here is a list of nouns that start with SP.

spa, space, spacecraft, spacer, spaceship

spacesuit, spacing, spade, spaghetti, span

spangle, spark, sparkle, spasm, spat

spate, spatiality, spatter, speaker, speaking

spear, special, specialist, specialization, specialty

specification, specificity, specimen, specimentalia, speck

spectacle, spectator, specter, spectra, spectre

spectrometer, spectrophotometer, spectroscopy, spectrum, speculation

speculator, speech, speed, speedboat, speedometer

spell, spelling, spending, sphere, spice

spider, spike, spin, spinach, spindle

spine, spinnability, spinneret, spiral, spire

spirit, spirituality, spit, spite, spittle

splash, spleen, splendor, splenomegaly, splice

splicing, splinter, split, splurge, spoilage

spoke, spokesman, spokesmen, sponge, sponging

sponsor, sponsorship, spontaneity, spoof, spoon

spoonful, sport, sportsman, sportsmanship, sportsmen

sportswriter, spot, spotlight, spouse, spout

sprawl, spray, spraying, spread, spreader

spreading, spree, sprig, spring, springboard

springtime, sprinkle, sprinkling, sprouting, spruce

sprue, spume, spur, spurt, sputnik

spy

Hope you enjoy this page of nouns that start with sp and the rest of this noun list a-z site as well.