Born in Leiden, Tonnus Oosterhoff spent most of life in the Dutch province of Groningen.
Before publishing literary work, he wrote several anonymous stories for the magazine Mijn Geheim.
One of them was republished in his later collection of short stories Dans zonder vloer ("Dance without floor", 2003) with an alternate "less unrealistic" happy end.
Oosterhoff published collections of poems, short stories, essays, a novel, a play and a radio drama.
In 2012 Oosterhoff received the P. C. Hooft Award for his, according to the jury, "highly renewing poetry".