All in a Day is a children's picture book by Mitsumasa Anno.

All in a Day may also refer to: All in a Day (radio show), a Canadian radio program on CBC Radio One "All in a Day", a song by Alex Glasgow from The Camera & the Song "All in a Day", a song by Ashley Roberts from Butterfly Effect "All in a Day", a song by Boom Boom Satellites from To the Loveless "All in a Day", a song by the Butterfield Blues Band from Keep On Moving "All in a Day", a song by the Corrs from In Blue "All in a Day", a song by Joe Strummer & the Mescaleros from Streetcore "All in a Day", a song by John Michael Montgomery from Time Flies "All in a Day", a song by Little Brother from May the Lord Watch "All in a Day", a song by Paddy Casey from Living "All in a Day", a song by Berner All in a Day, a book by Cynthia Rylant