London Single Diary (伦敦单身日记) is a 2009 novel written by British Chinese author Yilin Zhong.

After arriving to London as an oversee exchange student from China, Zhong begins documenting her experiences during her first three years in the United Kingdom.

It focuses on the love and joys of living abroad and the pain of being away from one's family.

London Single Diary became a best seller soon after being published, with the first edition being sold out within three weeks.

[citation needed] One year later, its sequel London Love Story reached the #3 spot on the list.