Renyi or Rényi may refer to:
People Alfréd Rényi (1921–1970), Hungarian mathematician Katalin Rényi (1951–2023), Hungarian painter and graphic designer Tibor Rényi (1973–), Hungarian painter Tom Renyi (1947–), American banker and businessman
Locations in China Renyi, Rongchang County (仁义镇), town in Rongchang County, Chongqing Renyi, Hezhou (仁义镇), town in Babu District, Hezhou, Guangxi Renyi, Guiyang County (仁义镇), town in Guiyang County, Hunan Renyi, Leiyang (仁义镇), a town of Leiyang City, Hunan.