列氏温标，代表符号为为°Ré、°R或°R，由法国科学家瑞尼·瑞欧莫于1731年提出。水的冰点被定为列氏0度，而沸点则为列氏80度。因此，如欲将列氏温标表示的温度转为摄氏温标，须把列氏乘上1.25（即°C=1.25×°R）。如换成热力学温标，则使用 K=1.25×°R+273.15。

列氏温标曾经在欧洲特别是法国以及德国相当流行，但随后均由摄氏温标所取代。

The Réaumur scale French: [ʁe.o.myːʁ] (°Ré, °Re, °r), also known as the "octogesimal division", is a temperature scale in which the freezing and boiling points of water are set to 0 and 80 degrees respectively. The scale is named after René Antoine Ferchault de Réaumur, who first proposed a similar scale in 1730.