"Diary" is a song written and produced by David Gates, which was released by his band Bread in 1972. The song spent 11 weeks on the Billboard Hot 100 chart, peaking at No. 15, while reaching No. 3 on Billboard's Easy Listening chart, No. 12 on Canada's RPM 100, No. 20 on Canada's CHUM 30 chart, and No. 26 on Australia's Go-Set chart.

Anita Kerr recorded an easy listening cover of "Diary", which featured Pieter van Vollenhoven on piano and was released on her 1979 album Together.