The Trust will be joining forces with other health organisations across the world in an attempt to smash the record by inviting patients to join them for afternoon tea on Wednesday, March 16.
The Guinness Book of Records credits the Yorkshire Building Society as the current holders after hosting a party across six sites in June 2015, which was attended by 667 members of staff.
Royal Surrey’s world record breaking attempt is part of Global Nutrition and Hydration Week 2016, March 14-20.
Throughout the week, the Trust will be hosting a variety of activities to raise awareness of the benefits of good nutrition and hydration.
As well as the tea party other events will include the Big Breakfast, Snack Basket, Thirsty Thursday, and Fruity Friday.
Royal Surrey’s Deputy Director of Nursing, Jenny Faulkner, said: “The week is all about raising awareness of the need for good nutrition and hydration, not just for patients but for members of staff as well.
“The benefit that a tasty well-balanced meal and regular fluids can have on a patient’s treatment, condition and overall wellbeing cannot be ignored.”