Edgar Valter (September 21, 1929, Tallinn – March 4, 2006, Tartu) was an Estonian graphic artist, caricaturist, writer and illustrator of children's books, with over 250 books to his name, through 55 years of activity (1950–2005). His most famous work is Pokuraamat (The Poku Book).

Edgar Valter was born on 21 September 1929, in Tallinn, the fourth child of a family of eight kids. He completed middle-school in 1945, but didn't graduate from Secondary School.

He began working as a freelance artist in 1950, eventually illustrating some of the most famous Estonian children literature characters, including the Krõll, the Naksitrallid, the Sipsik, and the Kunksmoor. Edgar Valter illustrated over 250 books, most of them being books for children. His caricatures were published by many journals and newspapers. Edgar Valter worked for the magazines Hea Laps (a good kid), Täheke (a star), Pioneer, and Pikker (a humor and satire magazine published during soviet times).

Edgar Valter lived his last 15 years in the Pöörismäe farm, located at the Urvaste rural municipality of the Võrumaa County.