Ren or REN may refer to:

People Ren Gill, or Ren, Welsh musician Ren (South Korean singer), member of South Korean boy band NU'EST Renforshort, Canadian singer formerly known as Ren MC Ren, rapper from the group N.W.A. Ren (given name), a mostly Japanese given name, includes a list of people and fictional characters with the name Ren (surname) (任), Chinese surname, includes a list of people and fictional characters with the name Raw Egg Nationalist, British far-right influencer

Places and buildings Ren County, in Hebei, China Ren, Iran, a village in Kerman Province, Iran Ren (building), a high-rise residential building in Seattle, Washington, United States Orenburg Airport, IATA code REN, civil airport in Russia

Science and technology Renin, a gene also known as REN Ren, in anatomy, a kidney (from Latin) Ren (command), a shell command in computing Renanthera, abbreviated as Ren, an orchid genus Ringer equivalence number (REN), a number which denotes the loading effect of a telephone ringer on a telephone line

Religion Ren, "name, identity", a part of the Ancient Egyptian concept of the soul or spirit Ren (philosophy), Confucian concept

Other uses Ren (fictional weapon), an alternate term for lightsaber in the Star Wars franchise REN TV, a Russian free-to-air television network Techrules Ren, a Chinese sports car Redes Energéticas Nacionais (REN), Portuguese energy company

See also Renn, a given name and surname Rennie (disambiguation)