Sjoukje Maria Diderika Troelstra-Bokma de Boer (née Bokma de Boer; 13 February 1860 – 9 January 1939), better known under her pseudonym Nienke van Hichtum (pronounced [ˈniŋkə vɑn ˈɦɪxtʏm]), was a well-known Frisian Dutch children's author and translator.

Van Hichtum wrote books and stories in both West Frisian (her native language) and Dutch.

The biennial Dutch literary award Nienke van Hichtum-prijs is named after her.

[1] She was born in Nes to Albertus Minderts Bokma de Boer and Dieuwke Jans Klaasesz, the fifth and last daughter of a preacher.

From 1888 to 1904, she was married to the socialist leader Pieter Jelles Troelstra.