Nella Last (née Nellie Lord; 4 October 1889 – 22 June 1968) was an English housewife who lived in Barrow-in-Furness, Lancashire, England. She wrote a diary for the Mass Observation Archive from 1939 until 1966 making it one of the most substantial diaries held by Mass Observation. Her diary, consisting of around 12 million words, is one of the longest in the English language.