- Elisabeth Anderson-Sierra
- 54,091.94 ounces litre(s)
- United States (Aloha)
The largest donation of breastmilk by an individual is 1,599.68 litres (56,301.20 UK fl oz; 54,091.94 US fl oz) and was achieved by Elisabeth Anderson-Sierra (USA) as verified in Aloha, Oregon, USA, from 20 February 2015 to 20 June 2018.
Elisabeth has donated to the Tiny Treasures Milk Bank of Duarte, California, USA, which helps support premature infants.