Sumac may refer to: Soumak rug (also spelt Soumakh, Sumak, Sumac, or Soumac), a type of weft-wrapped flatwoven Oriental rug Sumac (band), a 2010s American/Canadian rock band Sumac, any one of approximately 250 species of flowering plants in the genus Rhus and related genera A spice made from the plant Rhus coriaria Poison sumac, Toxicodendron vernix (formerly classified as Rhus vernix) Sumach, Missouri, a community in the United States Yma Sumac, a Peruvian folk and Latin singer Sumac Centre, an independent community and social centre in Nottingham, UK Stanford University Mathematics Camp, a competitive summer mathematics program for rising high school juniors and seniors