Djordje Janjatovic was born on May 2, 1954 in Sombor. His father’s name was Jovan and his mother’s name was Stana, maiden name Gnjatovic. He lived in Sombor until 1994 when he moved to Novi Sad with this son and his spouse.

He holds an MA in Economics. He has been a certified accountant since 1996, a court expert for economics and finance since 2000, and a certified auditor since 2010. He worked for Banka of Vojvodina for 33 years, where he was the Executive Director of Accounting and Finance from 1997 to 2007. He has been in retirement since 2019.

Based on the church census in the Dabar-Bosnian Metropolis from 1882, he published the book "Last Names of Serbs in Bosnia" (Sombor, 1993, second revised edition, Banja Luka, 2020). He also published books: "Life with Bees - Beekeeper Biography of Djordje A. Janjatovic" (Sombor, 2001), "Candlemakers of Captain Brankovic" (Sombor, 2016), "Janjatovics and Janjetovics: Surnames in the area of Military Frontier and Bosnia" (Belgrade, 2021) and "Janjatovs in Backa and Banat" (Belgrade, 2023).

Towards the end of 2020, he published a photo monograph titled Sombor Janjatovics: a History of a Family through Photographs. The Janatovics are one of the oldest Serbian families in Sombor, and the book describes their history over the previous four centuries. The photo monograph contains 25 genealogies, 23 maps, 9 drawings of salashs (typical Vojvodinian ranches), and around 1500 photographs.

Djordje Janjatovic was a member of the Cirilica organization from Novi Sad from June 15, 2001 until the end of 2010. As part of the organization, he was the president of the Committee for the Official and Public Use of the Serbian Cyrillic. from February 12, 2005, until the end of 2010. After that, he was an associate in the organizations Cirilica and Srpska Cirilica from Belgrade. Starting in 2001, he has been a public advocate of making Cyrillic the only official script of the Serbian language. He has published three books about his struggle for Cyrillic: The Struggle for Cyrillic (Novi Sad, 2011), The Struggle for the Cyrillic: Continuation (Novi Sad, 2016), and the Struggle for the Cyrillic: the Most Important Goal of Language Policy for the Serbs (Novi Sad, 2021).