- Mary Beth Meyer, Douglas Meyer
- 3.590 kilogram(s)
- United States (Slidell)
The heaviest grapefruit weighs 3.590 kg (7 lb 14 oz) and was achieved by Douglas & Mary Beth Meyer (both USA) in Slidell, Louisiana, USA, on 19 January 2019.
The white grapefruit produced from the 10 year old tree also holds the Guinness World Records title for largest grapefruit by circumference.