The Binas (Often written as BiNaS or BINAS) is a Dutch science reference work (a handbook) for the higher levels of secondary school, consisting largely of tables and formulas. The name stands for biologie, natuurkunde, scheikunde (biology, physics, chemistry). It is compiled by NVON (Dutch Association for Education in the Natural Sciences) and has been published by Noordhoff Uitgevers since it became the standard reference work allowed at the central examinations in 1975. An English version of the Binas is also available.

The Binas is divided into five chapters: general, physics, mathematics, chemistry, and biology. Each chapter consists of multiple tables, each with specific information. These tables can be short or can span up to a few pages. To find information, students can use the alphabetical register in the back. The Binas does not make use of page numbers, but instead the register refers you to a table number.