Antonia "Tonke" Johanna Dragt (Dutch pronunciation: [ˈtɔŋkə ˈdrɑxt]; 12 November 1930 – 12 July 2024) was a Dutch writer and illustrator of children's literature. Her book De brief voor de koning was chosen by CPNB as the best Dutch youth book of the latter half of the twentieth century.

Antonia Johanna Dragt, better known as Tonke Dragt, was born in 1930 in Batavia on the Dutch East Indies (now Jakarta in Indonesia) as the eldest daughter of a Dutch insurance agent based in Batavia. Dragt was initially called "Tonneke" (Dutch for 'tubby'), a name she disliked "because I was tall and thin". She attended the Nassau School. Her family environment was creative: her father and one of her sisters were also interested in writing and the Dragt family had their own 'house library'. The inspiration for several of her early novels such as De brief voor de koning en Geheimen van het Wilde Woud were taken from her yearly Summer holidays at Puncak and Situgunung.

During the Second World War, Dragt, her mother and her two sisters were interned in Japanese prisoner's camp Tjideng. The situation in the camp was adverse, shortages of food and other essentials were prevalent. As reading had been her biggest hobby, Dragt found herself often bored as there were no novels. To solve this problem, aged 13, she and her friend Tineke decided to write a novel, De jacht op de touwkleurige (The hunt for the rope-coloured) under the pen name Tito Drastra. Dragt also provided illustrations for this novel. A second, never completed book, De Florentijnse ring would be a motive for a part of her debut novel De verhalen van de tweelingbroers. Both novels were written on loose sheets of used paper and toilet rolls due to the lack of proper notebooks.

After the Second World War ended, Dragt was reunited with her father and family moved to the Netherlands, where they first came to live in Dordrecht in 1949 and subsequently moved to The Hague. Dragt could never return to Indonesia, initially because she lacked money, later because her health would not allow it anymore.

In the Netherlands, she completed her HBS exams and subsequently was enrolled at the Academy of Visual Arts in The Hague. Her dream was to become a full-time artist, but her parents encouraged her to do something which would lead to making enough income to take care of herself. As a result, she focused on becoming an art teacher.^{[citation needed]}

Dragt afterwards did most of her writing at night time while working as a drawing teacher at primary schools during the day. She had problems with controlling her classroom as a teacher, as classes were often filled with forty to fifty children due to the babyboom. She quickly noticed that by telling stories, she could calm her pupils down. This experience would lead to the inspiration for Frans van der Steg, the protagonist in her novel De zevensprong.

In 1956, her first work was accepted in several magazines and newspapers, most notably the magazine Kris Kras. Five years later, her debut book appeared and was received well by critics. She made a big name for herself with her second novel in 1962, De brief voor de koning (The Letter for the King), which won the award for being the best Dutch children's book of the year. She continued to produce at a high rhythm during the 1960s, but massively reduced the output of new work in the next decades, although collections of older short stories filled up many of the gaps.

Apart from writing and illustrating her own books, Tonke Dragt also made illustrations for some other books, including work by Paul Biegel, E. Nesbit, Rosemary Sutcliff, and the novel Elidor by Alan Garner.